6. what structural modification of certain tubule cells enhances their ability to reabsorb substances from filtrate?

Answers

Answer 1

The presence of dense microvilli in the epithelial cells of the proximal convoluted tubule enhances their ability to reabsorb substances from the filtrate. This structure is also called brush border epithelium.

What is tubular reabsorption?

The movement of water and solutes from the proximal convoluted tubule back into the bloodstream is called tubular reabsorption.

Water and solutes from the proximal convoluted tubule (PCT) are transported to the bloodstream in bulk and thus most of the reabsorption occurs via the PCT.

These tubules reabsorb about 60% of water and 90% of bicarbonate. They also reabsorb almost 100% of the glucose and amino acids.

This reabsorption takes place by two routes. First is the paracellular route in which solutes move between cells via the intracellular route. Second is the transcellular route in which solutes move through the cells.

Therefore, the structural modification helping the proximal convoluted tubule cells to enhance their ability to reabsorb substances from filtrate is the presence of microvilli.

Read more about tubular reabsorption, here

https://brainly.com/question/10066104

#SPJ4


Related Questions

Meiosis is the process by which cells are produced from a cell that was originally diploid. True or false?.

Answers

False

The statement "Meiosis is the process by which cells are produced from a cell that was originally diploid" is false.

This is because meiosis is the process by which cells are produced from a cell that was originally haploid.

What is meant by meiosis?Meiosis is a type of cell division that results in the production of four gamete cells and a 50% reduction in the number of chromosomes in the parent cell.To develop egg and sperm cells for sexual reproduction, this process is necessary.We observe the following stages in meiosis:Meiosis Iinterphase ITwo identical complete sets of chromosomes are produced as a result of the cell's DNA being duplicated.Two centrosomes, each comprising a pair of centrioles, are located outside the nucleus and are essential for the process of cell division.These centrosomes produce microtubules during interphase.prophase IUnder a microscope, the copied chromosomes condense into distinct X-shaped structures.Two sister chromatids with identical genetic material make up each chromosome.So that both copies of chromosome 1 are together, both copies of chromosome 2 are together, and so on, the chromosomes couple up.The chromosomal pairs may then exchange DNA strands through a process known as recombination or crossing over.The membrane around the cell's nucleus melts at the conclusion of Prophase I, freeing the chromosomes.Microtubules and other proteins make up the meiotic spindle, which spans the cell between the centrioles.metaphase IAlong the cell's center (equator), the chromosomal pairs are positioned adjacent to one another.The meiotic spindles are now extending from the centrioles, which are now located at the cell's opposite poles.One chromosome from each pair is attached by the meiotic spindle fibers.anaphase IThe meiotic spindle then separates the pair of chromosomes by pulling one chromosome to one pole and the other chromosome to the opposite pole of the cell.The sister chromatids remain together throughout meiosis I. In contrast to mitosis and meiosis II, this occurs.telophase I and cytokinesisThe chromosomes reach the opposite poles of the cell in whole.A complete pair of chromosomes congregates at each pole of the cell.Each set of chromosomes is surrounded by a membrane that divides into two new nuclei.The single cell then divides into two independent daughter cells, each of which has a nucleus and a complete complement of chromosomes. Cytokinesis is the name for this process.Meiosis IIprophase IITwo daughter cells with 23 chromosomes each are present at this time (23 pairs of chromatids).The chromosomes once more condense into clear, X-shaped structures that are simple to observe under a microscope in each of the two daughter cells.Each daughter cell's nucleus membrane disintegrates, releasing the chromosomes.Centrioles are duplicative.Once more, the meiotic spindle forms.metaphase IIChromosomes (a pair of sister chromatids) are arranged end to end along the cell's equator in each of the two daughter cells.In each of the daughter cells, the centrioles are now located at opposing poles.The sister chromatids are connected by meiotic spindle fibers that are attached to each pole of the cell.anaphase IIChromosomes (a pair of sister chromatids) are arranged end to end along the cell's equator in each of the two daughter cells.In each of the daughter cells, the centrioles are now located at opposing poles.The sister chromatids are connected by meiotic spindle fibers that are attached to each pole of the cell.telophase II and cytokinesisThe chromosomes reach the opposite poles of the cell in whole.A complete pair of chromosomes congregates at each pole of the cell.Each set of chromosomes is surrounded by a membrane to produce two new cell nuclei.Even though this is the final stage of meiosis, cell division is not finished without one more cycle of cytokinesis.Four granddaughter cells, each with half a set of chromosomes (haploid), are produced once cytokinesis is finished.In men, these four cells are all sperm cells, whereas in females, one of the cells is an egg cell and the other three are polar bodies (small cells that do not develop into eggs).

To learn more about meiosis visit:

https://brainly.com/question/11622266

#SPJ4

Between 1994 and 1997, 70 Addax were released into fenced sections of protected areas in Tunisia and Morocco. By
2003, their numbers had increased to about 200. This is an example of
OA. Ex situ conservation
OB. Coppicing
OC. Habitat management
D. In situ conservation

Answers

It is an example of Ex situ conservation. The correct option is A.

What is ex-situ conservation?

It is a method of conserving biodiversities outside their natural habitats.

Ex situ conservation is in direct contrast to in situ conservation. This means that in in-situ conservation, biodiversities are conserved in their natural habitats.

In the illustration, the Addax were released into fenced sections of protected areas in two countries.

The fenced section means that the Addax were not allowed to roam freely as they would in their natural habitats. The fenced section means that their movement is limited as compared to natural habitats.

Thus, the Addax were being conserved ex-situ.

More on ex-situ conservation of biodiversities can be found here: https://brainly.com/question/20935891

#SPJ1

What body systems are primarily affected and what physiological changes would you expect joe and frank to experience during such vigorous exercise?

Answers

Cardiovascular system, respiratory system, circulatory system and muscular systems are the body systems which are primarily affected during vigorous exercise.

During rigorous exercises, a number of body systems get affected. The cardiovascular system is affected as the heart starts working at its maximum level and the blood is pumped faster using circulatory system.

This in turn affects the muscular system and the muscles of the body would work hard and eventually become fatigued. The respiratory system gets affected as we also get out of breath. This overwork by our body systems can leave us feeling dizzy as well as fatigued.

To learn more about cardiovascular system here:

brainly.com/question/27364691

#SPJ4

What is the difference between nutation and barycenter?
(I at least need 3 sentences minimum. thank u!)

Answers

Generally speaking, precession is believed to occur as a result of the gravitational forces exerted by the sun and moon as they revolve around the earth. When an object revolves, its axis of rotation exhibits a nodding or swish motion. There is a wobble in the movement of precession. This phenomenon is caused by the gravitational pull exerted by one body upon another, resulting in nutation.

Hope this helps :)

A fungi-plant mutualism is discussed in the reading. How does this fungi-plant mutualism work?

Answers

Mycorrhiza, or the association of a fungus with plant roots, and lichen (fungi with blue-green algae combination)are two typical mutualistic connections involving fungi.

Discussion about mutualism-

Many fungi cause plant harm or death. Although there are fungi that are advantageous to plants:

The majority of terrestrial plants are closely allied with arbuscular mycorrhiza fungus (AM fungi), which promote their expansion. A gene that is especially triggered by arbuscular mycorrhiza (AM) fungus and affects the growth of the plant root has been discovered by scientists who have examined the evolution of this symbiosis: MIG1, a GRAS transcription factor, promotes the growth of bigger and more numerous root cortical units.Both parties are benefitted: The arbuscular mycorrhiza (AM) fungus defends the plants against pests, aids in the extraction of minerals from the soil, including urea, phosphorus, and groundwater, and encourages plant development by affecting root formation.

Learn more about mycorrhiza here:

https://brainly.com/question/15711809

#SPJ4

The _ states that the forces that are changing Earth's surface today are the same forces that changed Earth's surface in the past

Answers

The uniformitarianism states that the forces that are changing Earth's surface today are the same forces that changed Earth's surface in the past which is because of the presence of the same types of agents being present.

What is Uniformitarianism?

This type of doctrine which was founded by James Hutton and made popular by Charles Lyell in the 19th century talks about how the earth's geologic processes are the same as a result of the agents of weathering being the same in this type of scenario.

Weathering on the other hand can be defined as the process in which rocks are broken down into smaller particles to form different types of soil. The agents of weathering has been the same today and in the past which makes it constant.

Hence, the reason why Uniformitarianism was chosen as the most appropriate choice.

Read more about Uniformitarianism here brainly.com/question/1948962

#SPJ1

What would happen if the operator sequence of the trp operon contained a mutation that prevented the repressor protein from binding to the operator?

Answers

In the absence of tryptophan, the genes trpA-E will not be transcribed.

If there were a mutation in the operator region of the trp operon, there would be a nucleotide change in the sequence of the operator. Mutations in the repressor that prevent its binding to the operator will lead to constitutive expression Mutations that prevent binding of the inducer without affecting the ability to bind to the operator lead to a non‑inducible phenotype.

The tryptophan binds to the trp repressor and causes it to change shape, converting into its active form. The trp repressor with the bound tryptophan attaches to the operator, blocking RNA polymerase from binding to the promoter and preventing transcription of the operon.

To learn more about tryptophan, here

https://brainly.com/question/13245564

#SPJ4

In mri, structural information about the brain can be collected by using strong magnetic fields together with radio waves to manipulate the nuclear _______________ of protons.

Answers

none of the answers in this list of options fills the blank. Strong magnetic fields created by the powerful magnets used in MRIs compel the body's protons to align with the field.

The protons are activated and spin out of equilibrium when a radiofrequency current is then pulsed through the patient, struggling against the magnetic field's pull.Because protons can spin either left or right, which corresponds to a distinct energy state, they have multiple spin configurations. Higher energy states are experienced by protons that align against the external magnetic field as opposed to lower energy states experienced by protons that do so.The hydrogen protons will align themselves once more with the static magnetic field once the energy from the RF pulse is lost. Hydrogen protons serve as the source of the MRI signal since they  move back into alignment with the magnetic field, and fall out of "phase" with each other.

DISCLAIMER

In MRI, structural information about the brain can be collected by using strong magnetic fields together with radio waves to manipulate the nuclear _______________ of protons.

electron

mass

none of the answers in this list of options

charge

number

learn more about MRI here:

https://brainly.com/question/16007706

#SPJ4

The flexor muscles in the anterior arm (biceps brachii and brachialis) are innervated by what nerve?

Answers

Musculocutaneous nerve is responsible for innervating the flexors of the arm.

The axillary nerve innervates the deltoid and teres minor. The musculocutaneous nerve is responsible for innervating the flexors of the arm, including the biceps brachii, coracobrachialis, and the medial aspect of the brachialis. The Musculocutaneous nerve is a large branch of the Brachial Plexus. It is called musculocutaneous nerve as it supplies the muscles of the front of the arm and skin of lateral side of forearm. The Musculocutaneous nerve is a terminal branch of the lateral cord of the Brachial Plexus.

To learn more about Musculocutaneous nerve , here

https://brainly.com/question/7496424

#SPJ4

For a gene with two alleles, s and s, if the frequency of the one allele (s) is 0.25, then the frequency of the other allele(s) is?

Answers

For a gene with two alleles S and s, the frequency of the other allele can be found out by using Hardy Weinberg Equilibrium.

According to the Hardy Weinberg Equilibrium, the sum total of all allelic frequency is equal to one for a random mating population.

As per the the given question, the frequency of one allele i.e. s is 0.25 that means the frequency of the other allele i.e. S can be found out using the given relation:

∴ s + S = 1                   (Hardy Weinberg Equilibrium)

⇒ 0.25 + S = 1

⇒ S = 1 - 0.25

⇒ S = 0.75

So, the Frequency of the other Allele (S) is 0.75

Learn more about Hardy Weinberg Equilibrium here, https://brainly.com/question/16823644

#SPJ4

Drag each tile to the correct box. lucia is walking barefoot in her yard. she accidentally steps on a nail. how will her nervous system work to generate a reaction? arrange the events chronologically. interneurons relay the impulse to motor neurons in the spinal cord. she immediately moves her foot. the sensory neuron generates an impulse. receptors in her toe receive stimuli.

Answers

The sequence of events that will occur are as follows:

Receptors in her toe receive stimuli.The sensory neuron generates an impulse. Interneurons relay the impulse to motor neurons in the spinal cord.She immediately moves her footWhat is Nervous System?

The brain, spinal cord, and nerves make up the nervous system. It greatly affects how you feel and think, as well as how your body behaves. You can walk, speak, swallow, breathe, and learn thanks to it. It also regulates the body's emergency response.

To learn more about the nervous system with the help of the given link:

https://brainly.com/question/3217086

#SPJ4

A carbohydrate sample weighing 0. 235 g was found to have a fuel value of 3. 84 kj. What is the fuel value of one gram of this carbohydrate, in nutritional calories?

Answers

The fuel value of one gram of this carbohydrate, in nutritional calories is 3910 cal.

A vast variety of both good and bad foods, including bread, beans, milk, popcorn, potatoes, cookies, spaghetti, soft drinks, corn, and cherry pie, include carbohydrates. Because they work quickly and provide energy as soon as they are taken, carbohydrates—which have 4 kcal per gram—are the foods that are used as an energy source the most frequently.

From the given data,

0.235 g carbohydrate = 3.84 kj = 3840 joule

1g carbohydrate = 3840/0.235 = 16340.43 joule

(1 Cal = 4.1841)

1 g carbohydrate = 16340.43/ 4.184 = 3905.5 Cal

fuel value of 1 g carbohydrate = 3905.5 Cal

answer: 3910 Cal

learn more about carbohydrates here: https://brainly.com/question/20290845

#SPJ4

A carbohydrate sample weighing 0. 235 g was found to have a fuel value of 3. 84 Kilojoule. The fuel value of one gram of this carbohydrate, in nutritional calories is 3910 Cal.

What is Carbohydrates ?In our daily life we usually uptake Carbohydrates as the primary source of energy. It contains 4 KCal/gm.Examples of Carbohydrates are ; Starch, Bread, Rice, Milk, Soft drinks, Corn etc.Carbohydrates are fast acting fuel because it breaks down into Sugar and Sugar is the main energy source of our brain and cells.

Now,

0.235 g Carbohydrate = 3.84 kilojoule

                                     = 3840 joule

1g Carbohydrate = 3840/0.235

                            = 16340.43 joule     [1 Cal = 4.1841]

1g carbohydrate = 16340.43/ 4.184 = 3905.5 Cal

Fuel value of 1 g Carbohydrate = 3905.5 Cal

                                                     = 3910 Cal


Thus from the above conclusion we can say that The fuel value of one gram of this carbohydrate, in nutritional calories is 3910 Cal.

To learn more about Carbohydrates here : https://brainly.com/question/28161781

#SPJ4

Groups of nerves that accumulate over a region and intercommunicate are called a:_________

Answers

Plexus

In a plexus, nerve fibres from many spinal nerves are sorted and recombined to form a single nerve that contains all of the fibres that travel to a particular body area. There are four nerve plexuses in the body's trunk: The head, neck, and shoulder are all connected to the spinal cord by the cervical plexus.

What are Nerve cells ?

A particular kind of cell that relays information from the body to the brain and back to the body. A modest electrical current is used to transmit the messages. also known as a neuron.

The cells that take in sensory information from the outside world, provide motor commands to our muscles, and transform and relay electrical signals at each stage along the way.

Learn more about Nerve cells here:

https://brainly.com/question/4912257

#SPJ4

During gastrulation, the blastomeres fuse. three germ layers are formed. the placenta penetrates the endometrium. the neural tube closes. cells from the hypoblast move to the epiblast

Answers

During gastrulation, three germ layers are formed.

Gastrulation:

The process of gastrulation, during which the hollow ball of cells known as the blastula starts to differentiate into more specialized cells that get stratified over the growing embryo, is when the germ layers are formed.

One of the most important stages of development, gastrulation produces the three basic germ layers (ectoderm, endoderm, and mesoderm) and primes the system for organogenesis.

Each germ layer's cells undergo differentiation to become tissues and embryonic organs. The nervous system and the epidermis are two examples of tissues that develop from the ectoderm. The body's connective tissue and muscle cells are derived from the mesoderm.

Learn more about gastrulation here:

https://brainly.com/question/8270805

#SPJ4

Epinephrine activates the cyclic amp pathway. in this example, epinephrine is a(n) __________ and camp is a(n) __________

Answers

Epinephrine activates the cyclic amp pathway. in this example, epinephrine is a(n) first messenger and camp is a(n) second messenger

Epinephrine belongs to a class of drugs known as alpha- and beta-adrenergic agonists (sympathomimetic agents). It acts by relaxing the airway muscles and constricting the blood vessels. Epinephrine injection is used to treat severe allergic responses (including anaphylaxis) to insect bites or stings, drugs, foods, or other substances in an emergency.

It is also used to treat anaphylaxis caused by unknown chemicals or exercise-induced anaphylaxis. Epinephrine acts swiftly to enhance breathing, accelerate the heart, boost blood pressure, reverse hives, and reduce swelling of the face, lips, and throat.

Increased vascular smooth muscle contraction, pupillary dilator muscle contraction, and intestinal sphincter muscle contraction are all caused by epinephrine. Other noteworthy effects include increased heart rate, myocardial contractility, and beta-1 receptor-mediated renin release.

To learn more about epinephrine please visit -
https://brainly.com/question/13887971
#SPJ4

What is the most common presenting objective symptom of a urinary tract infection in older adults, especially in those with dementia?

Answers

Answer is Change in cognitive function.

Reason. confusion, hallucinations, agitation, dizziness, falls and poor motor skills are often mistaken for early stages of dementia, but all can be caused by a UTI.

The interior of a neuron is more negative than the outside due to the presence in the interior of?

Answers

The interior of the neuron is negative than the outside due to the presence of protein and chloride ions.

In contrast to the positive charge in an extracellular matrix, neurons actually have a strong negative charge inside them. This is due to the abundant accumulation of anions (negatively charged ions).

These anions are large molecules which cannot leave through any channel. So, they simply stay put and give the cell a negative charge inside.

The commonly present anion is chloride ion which keeps the neuron resting membrane potential in -70mV. If the neuron needs to conduct electrical impulse, neuron will then reach +40mV action potential by opening many cation channels (for example, Na/k channel).

Learn more about Neurons on

https://brainly.com/question/11538106

#SPJ4

The interior of the neuron is negative than the outside due to the presence of protein and chloride ions.

Why is a neuron charged even at resting state?At rest, a neuron is negatively charged. A typical neuron has -70 mV charge on it, i.e., it is 70 mV more negative on inside than outside.In a resting neuron, there is more K+ on the inside the cell than outside and more Na+ on the outside than inside.For each potassium ion present, there is an organic anion to balance it.Therefore organic anions like those of amino acids and proteins are in higher concentrations on the inside of cell than outside.Also the membranes are leaky for K+ as it can pass with the help of K+ channels causing positive charge to move outside the cell. However, the organic anions cannot move out resulting in more negative charge inside the cell.

Learn more about neurons here:

https://brainly.com/question/11538106

#SPJ4

what does the model represent?

Answers

Answer:

D) a molecule of oxygen

Answer:

An oxygen atom

Explanation:

its not a neutron, nor the oxygen's atomic mass (I hope you'll know what that is), and a molecule of oxygen is two oxygens atoms together, 02. Hope this helps.

The left cerebellum shows _____ activity, and the right cerebellum shows _____ activity when an individual is learning a mirror-reading task.

Answers

The left cerebellum shows decreased activity, and the right cerebellum shows increased activity when an individual is learning a mirror-reading task.

Body parts are moved by several regions of the cerebrum. While the right side of the brain directs movement on the left side of the body, the left side of the body is directed by the right side of the brain. The right hemisphere manages the left side of the body, while the left hemisphere manages the right.

The left hemisphere, for instance, has been found to be better at creating associations in memory, selective attention, and positive emotions. Contrarily, research has found that the right hemisphere performs better in terms of pitch perception, arousal, and negative emotions.

Learn more about right and left hemispheres here:

https://brainly.com/question/2833677

#SPJ4

Translation begins at a ______ codon which is _____ and ecodes for the amino acid ________

Answers

Translation begins at an AUG codon and encodes for the amino acid

The translation is the process by which ribosomes in the cytoplasm or endoplasmic reticulum make proteins after the process of converting DNA to RNA in the cell's nucleus, as defined by molecular biology and genetics.

A messenger RNA (mRNA) molecule's genetic code is deciphered during translation, which results in a precise order of amino acids in a polypeptide chain. Similar to transcription, it takes place in the cytoplasm after DNA transcription and has three stages: initiation, elongation, and termination.

The process by which information contained in messenger RNA (mRNA) guides the addition of amino acids during protein synthesis is known as translation in the context of genomics.

To learn more about translation please visit-
https://brainly.com/question/16746467
#SPJ4

The portions of the mature mrna where rna-binding proteins can attach in order to change rna stability are known as?

Answers

untranslated regions

A geologist’s compass differs from the more widely known orienteering compass in that the geologist’s compass ________.

Answers

A geologist's compass differs from the more widely known orienteering compass in that the geologist's compass can measure dip and plunge angles.

What is a compass?A compass is an instrument used to examine one’s position on the map area and to determine the relative position of various objects.It gives an idea of where you are heading to and where you need to be going.The geologist’s use a special type of compass which can not only determine the position but also make structural measurements of geological structures like dip of areas like sedimentary beds and plunge of fold axis.A clinometer is necessary in a compass to measure all the structural data. It measures features from the horizontal like dip and plunge,  and gradient.

Learn about magnetic compass here:

https://brainly.com/question/22964998

#SPJ4

Polysaccharide digestion and glycogen breakdown involve sequential cleavage from ________ ends of glucose polymers.

Answers

Sequential cleavage from the non-reducing terminals of glucose molecules is required for both glycogen degradation and polysaccharides hydrolysis.

Why non-reducing end is selected for digestion?

A polysaccharide's non-reducing end is the one where an anomeric carbon participates in the glycosidic connection. The elimination of carbohydrate remnants one at a time out from the non-reducing terminal occurs during glycogenolysis and polysaccharides hydrolysis.

For example, several enzymes are involved in glycogenolysis in the liver and muscle. An example of such an enzyme is glycogen phosphorylase, which catalyzes the successive dissociation of the alpha 1->4 glycosidic bond that connects two glucose molecules at a non-reducing terminal of glycogen. The last glucose residue is eliminated as alpha-D-glucose 1-phosphate.

That is why non-reducing end of glucose is chosen for digestion or breakdown of the carbohydrate polymer.

Learn more about non-reducing here:

https://brainly.com/question/1832596

#SPJ4

Name the gland cells of the epithelium in the small intestine.

Answers

Goblet cells, unicellular gland cells, enteroendocrine cells of the epithelium in the small intestine.

What is epithelium?Layers of cells known as "epithelium" line hollow organs and glands. These cells are also responsible for the body's exterior.The epithelium is a type of body tissue that covers all of the internal and exterior body surfaces, lines hollow organs and body cavities, and makes up the majority of glandular tissue.They make up the majority of the tissue in glands, line body cavities and hollow organs, and cover all of the body's surfaces. They conduct a multitude of activities that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception.Because word was first used to describe the translucent layer of tiny tissue "nipples" on the lip, epithelium got its name. The plural version of the term is epithelia, and it has both mass and count connotations.A form of animal tissue known as an epithelium is composed of tightly packed cells, or epithelial cells, that lie atop a basement membrane. Its purpose is to cover or line different bodily surfaces and cavities.

Learn more about epithelium here:

https://brainly.com/question/7446006

#SPJ4

Human impacts on biomes are best characterized by _______. a. increased fossil fuel usage b. industrial pollution of landfills c. interruption of natural biome processes d. sewage contamination of groundwater please select the best answer from the choices provided a b c d

Answers

Human impacts on biomes are best characterized by interruption of natural biome process.

What is a Biome?

An area of the globe that may be categorized based on the kind of plants and animals that inhabit there is known as a biome. What life there is in a biome depends on factors like temperature, soil, light, and water availability.

An ecosystem is distinct from a biome. An ecosystem is a habitat where living and nonliving things coexist. A biome is a particular geographical region distinguished by the organisms that call it home. Many different ecosystems can make up a biome. For instance, habitats like coral reefs and kelp forests can be found in aquatic biomes.

To learn more about Biome with the help of the given link:

https://brainly.com/question/6253586

#SPJ4

A species of bird on the mainland can have yellow (bb), blue (bb), or green (bb) plumage. a few yellow birds land on a ship and are carried past an island, which they land on and settle. the resulting population of birds would have an allele frequency of: a. b: 1 b: 0 b. b: 0.3 b: 0.7 c. b: 0 b: 1 d. b: 0.5 b: 0.5

Answers

Birds living in this population would have an allele frequency of "b."

If the blue species of birds have homozygous dominant alleles of BB, the green species of birds have heterozygous alleles of Bb, and the yellow species of birds have homozygous recessive alleles of bb, then b is the "recessive allele" and b is the dominant allele for blue.

NOTE:

The term "recessive allele" refers to the character/allele that is eclipsed by the dominant character, whereas a "dominant allele" is a character/allele whose phenotype is displayed to the complete exclusion of the other character/allele.

When a pair of alleles in a gene are homozygous, they are the same; when they are heterozygous, they are different.

Given that the yellow birds are homozygous for "b," the population of birds that results when they (only) arrive and settle on the Island will also be homozygous for "b." As a result, every bird on the island will have the gene "bb".

learn more about  allele frequency here

https://brainly.com/question/6139888

#SPJ4

A percutaneous ____________________ is a minimally invasive procedure that is performed to treat osteoporosis-related compression fractures of the spine.

Answers

A percutaneous vertebroplasty is a procedure which is minimally invasive that is performed in order to treat osteoporosis related compression fractures of the spine.

Vertebroplasty is a procedure which helps stabilizing the spine by treating the compression fractures in it. This is done by injecting the bone cement into the vertebrae on the back bones which has been broken or cracked due to osteoporosis.

The added cement hardens up and helps in the stabilizing the fractures present in the spine and supporting it. This procedure in minimally invasive as it is done through just through a small puncture in the skin instead of open incision.

To learn more about osteoporosis here

brainly.com/question/7246059

#SPJ4

Identify whether or not the different agents of evolutionary change could affect allele frequencies in a population?

Answers

Yes, the different frequencies of evolutionary change could affect allele frequency in a population.

What are the agents of evolutionary change?

All populations are usual in a constant state of evolution. This means that all the species are continuously changing their genetic makeup over different generations. These changes can be subtle or they can be spontaneous.

If a population is not evolving, it is said to be in Hardy - Weinberg state. In this state, the allele frequency and the genetic makeup of the population will remain the same across generations.

The agents of evolutionary change defy the Hardy - Weinberg state. These are mutation, gene flow, non-random mating, natural selection and genetic drift.

Read more about evolutionary change, here

https://brainly.com/question/22172139

#SPJ4

What is the magnitude (amplitude) of an action potential?
a. 30 mv
b. 70 mv
c. 100 mv

Answers

Option C 100mv because the membrane goes from -70 mV to +30 mV. Thus, during the action potential, the inside of the cell becomes more positive than the outside of the cell.

Which enzyme listed would you expect to have increased activity in response to a higher than normal concentratio of epinephrine?

Answers

Adenyl cyclase is the enzyme  would you expect to have increased activity in response to a higher than normal concentration of epinephrine. As epinephrine levels rise, adenylyl cyclase is activated in muscle cells, increasing glycogenolysis.

The glucose-6-phosphate produced by glycogenolysis is utilised directly in glycolysis since it cannot be converted into free glucose and expelled from the muscle cell. Adenylyl cyclase is activated once epinephrine attaches to its receptor on the target cell and after the energy-rich molecule adenosine triphosphate, or ATP, is hydrolyzed to produce cAMP.

The phosphate creates two bonds to the adenine base in cAMP, a new form of adenosine monophosphate (AMP).

To learn more about Adenyl cyclase click here

brainly.com/question/13255476

#SPJ4

Other Questions
What are some reasons why the investment strategy of a 30-year-old might differ from the investment strategy of a 65-year-old? December 28 sold the 4 million shares of treasury stock at $36 per share what amount should llama report as additional paid-in capital in its december 31, 2021, balance sheet? Using this piece about the Civil Rights Act of 1964, write a summary following the format demonstrated in the previous lessons video. Remember to include a topic sentence: Title + author + strong verb + main idea Choose one of these strong verbs: Illustrates, explains, analyzes, describes Please write a summary including a topic sentence and clear supporting details written in your own words. Under the privacy act, individuals have the right to request amendments of their records contained in a system of records. True or false?. Ryan obtains a loan for home renovations from a bank that charges simple interest at an annual rate of 9.65%. His loan is for $17,100 for 54 days. Assume 1/365 each day is of a year. Answer each part below. Do not round any intermediate computations, and round your final answers to the nearest cent. (a) Find the interest that will be owed after 54 days. $ (b) Assuming Ryan doesn't make any payments, find the amount owed after 54 days. calculate the weight of CO having the same number of oxygen atoms as are present in 22g of CO2. Sheridan company has beginning and ending raw materials inventories of $84000 and $100000, respectively. if direct materials used were $110000, what was the cost of raw materials purchased? One of the elements of ergonomics is: the establishment of time standards. designing tools and machines that facilitate human work. assembly line balancing. allocating work time based on economic studies. the cost justification of technology. Miotic apparatus is formed during _____ of cell division. If Seven coins are flipped, what is the probability of obtaining at least one tail? which of the following could be the ratio between the lengths of the two legs of a 30-60-90 triangle The major use of the matrix as a tool in international location strategy is to? What is the climax of the poem the hunting of shumba What are the environmental and social consequences of rapid population growth in rural developing countries? in urban areas Read the speech "Voluntourism: An Opportunity Too Good to be True" and consider the advertisement "The Opportunity of a Lifetime." Then, answer the question.Voluntourism: An Opportunity Too Good to be TrueA Speech to the Student Body of Evergreen High[1] Picture this: It's Spring Break, and you fly off to some country where there's lush rainforests and beautiful, blue coastlines to explore. There's also people in need, so you decide to blend your vacation with volunteering. Volunteering as a tourist, or voluntourism, seems like a great way to explore new regions and help people at the same time. However, this "volunteer plus travel" experience can actually harm local communities. While many teens might view traveling and volunteering abroad as a worthwhile adventure, there are more genuine and effective ways to make a difference.[2] Most would agree that volunteering in general is a worthy use of time. However, what if you found out the children you are "helping" are actually being kept in poor conditions so voluntourists will spend money to come to the local area? Dale Rolfe, a supporter of ethical voluntourism, explains the shocking reality that "Animal sanctuaries and orphanages are often manufactured for the voluntourist...encouraging a cycle of exploiting the very animals and children the volunteers are trying to help."[3] Proponents of the "volunteer plus travel" experience also argue that traveling to new places builds character and is a valuable way to learn about different cultures. With voluntourism, however, participants often pursue experiences that are all about them. For example, they sign up to build a school for a gold star on their resume, but they have no real building skills and take jobs away from local construction workers (Schulten). Or, they arrive to teach English but instead take selfies with the locals. One world traveler and ethical voluntourist believes voluntourism "can perpetuate small minded views of the world by taking insulated, fake, and structured experiences and selling them as unabridged and eye opening" (Carlos). The voluntour experience is a mirage. The voluntourist's eyes are not opened to real life at the destination, and lasting change is not achieved.[4] If you want a genuine experience where you can see a lasting impact, there are better options than voluntourism. You can volunteer in your local community. Give an hour every week to your town's animal rescue. Serve monthly dinners to the homeless. Be a reliable, positive influence on a child who needs a mentor. Studies show that volunteering and forming lasting relationships with those you help has a positive impact on your physical and emotional health. In fact, blood pressure is reduced, memory is improved, and rates of depression are reduced (Michaels).[5] There is another reason to look into alternatives to voluntourism. Did you know the average "voluntour" travel package costs $3,400 (Rolfe)? Could that travel money be better spent? If the world's citizens are your passion, it could go to an international organization. If you care about education, your funds can be used to buy books for students in faraway lands. If you want villagers to have clean water, contribute funds to local efforts to dig wells. If you want to experience a different culture, travel to the country as a guest, and learn from the locals how you can best help them after you've returned home. But do not voluntour.[6] In reality, there are better ways to make a difference. Voluntourism might appear to be an adventure that blends travel and helping others, but it does little except provide a costly, superficial experience that might actually do more harm than good. So, volunteer where you are most needed-at home, where you can stay to see the job through and form genuine, lasting relationships. Choose a beautiful coastline closer to home and send the travel money you saved to an international organization that will put it to good use. Whatever you do, don't turn someone else's hardship into your vacation."The Opportunity of a Lifetime"(look at image)Both texts (the speech and the advertisement) address voluntourism. However, each text has a different purpose, which is reflected by the details each writer chose to include. Consider the words and images used.In a paragraph of 6-8 sentences, identify what each text emphasizes and explain how that emphasis reveals each author's position on voluntourism. Be sure to state each author's position and include evidence from both texts to support your analysis. If health care costs are evenly divided by asthma attacks and heart attacks, what dollar value does the epa put on an asthma attack or heart attack? What type of key is used in symmetric cryptography, must be known by both parties, and is used for both encryption and decryption? Criteria for a well-designed experiment should include a design to ensure that it is unbiased, accurate, replicable, and? What is the general term for the process in which a chemical species gains electrons? A heterozygous person that has one disease allele and one normal allele is referred to as a:______.