The unique chemical structure of the cell wall of mycobacterium spp. is associated with the presence of N-glycolyl muramic acid and an increase in lipid content.
Mycobacteria have strong, four-layered cell walls that are exceedingly thick. Peptidoglycan makes up the first layer, whereas lipids make up the subsequent layers. In order to maintain appropriate osmotic stability, peptidoglycan performs crucial activities like stiffness and rigidity. Bacteria are resistant to environments that are acidic and alkaline due to the presence of lipids.
All Mycobacterium species can be identified by their thicker cell walls, which are waxy, hydrophobic and abundant in mycolic acids. This is a characteristic that sets them apart from many other bacterial species. The mycolic acids make the mycobacterium less prone to antibiotics. Additionally, these molecules aid the bacteria in tricking the immune system and then hiding from it.
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Dna sequencing is a technology that allows scientists to?
DNA sequencing is a technology that allows scientists to determine the genetic information that is carried in a particular DNA segment
It also help scientists to determine the order the four bases: adenine, guanine, cytosine, and thymine or nucleic acid sequence
What is DNA sequencing?DNA sequencing can be defined as the process of determining the nucleic acid sequence
So therefore, DNA sequencing is a technology that allows scientists to determine the genetic information that is carried in a particular DNA segment
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Which describes
heritable variation?
A. an individual must adapt a
change over it's lifetime
B. a variation that gets passed on
to offspring
C. a species must learn a new
behavior after a change occurs
Answer:
B. Es la respuesta correcta.
Explanation:
pues heredar es cuando una persona le da unas caracteristricas de ella a otra y q se transmite generacion x generacion.
What factors would change during a pregnancy if the hormone progesterone were reduced or withdrawn?
If the hormone progesterone were reduced or withdrawn the uterus would contract more and peristalsis would increase.
Progesterone levels are generally high during pregnancy. The changes in progesterone cause a laxity or loosening of ligaments and joints throughout the body. In addition, high levels of progesterone cause internal structures to increase in size, such as the ureters. In normal pregnancies, at about seven weeks the placenta will make all the progesterone needed for a woman to stay pregnant. Progesterone plays an important role in the development of the fetus it also helps in growth of maternal breast tissue ,facilitate lactation, and strengthens the pelvic wall muscles in preparation for labor.
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What explains the fact that cells are able to differentiate into adult cells with different structures and functions?
For every one nadh molecule oxidized at complex i, how many total hydrogen ions are pumped across all of the complexes from the mitochondrial matrix to the inner membrane space?.
For every one NADH molecule oxidized at complex I, 10 HYDROGEN IONS are pumped across all of the complexes from the mitochondrial matrix to the inner membrane space
Cellular respiration has three main stages: glycolysis, the Krebs cycle, and oxidative phosphorylation.
What is Oxidative phosphorylation ?During oxidative phosphorylation, the reduced form of nicotinamide adenine dinucleotide (NADH) helps to carry electrons from one reaction to another across a series of molecular complexes.
The electron transport chain of oxidative phosphorylation is coupled to the generation of an electrochemical proton (H+) gradient across the mitochondrial inner membrane.Subsequently, this proton H+ gradient is then used to produce ATP by an ATP synthetase.Learn more about Oxidative phosphorylation here:
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After ovulation, the secondary oocyte is drawn from the peritoneal cavity into the uterine tube by _________
After ovulation, the secondary oocyte is drawn from the peritoneal cavity into the uterine tube by fimbriae.
Ovulation is the process by which a developed egg is released from the female ovary so that male sperm cells can fertilize it. In humans, only one egg is typically released at a time; on rare occasions, two or more may do so during the menstrual cycle. On the 14th to 16th day of the roughly 28-day menstrual cycle, the egg emerges from the ovary. The little, finger-like projections at the end of the fallopian tubes known as the fimbriae of the uterine tube, or fimbriae tube are where eggs go from the ovaries to the uterus. The ovary and fimbriae are joined.The immature ovum that forms soon after ovulation is called a secondary oocyte.Near the fibrotic end of the fallopian tube, secondary oocytes are discharged into the abdominal cavity.learn more about ovulation here:
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what graph would you use?
The pH of solutions in experimental test
tubes.
Test-tube number
1
2
3
4
5
pH
6.7
7.1
7.4
7.1
7.0
Explanation:
I don't know I just really need points at this point and need answers to a test so I'm sorry for this
Most of the species that are yet undiscovered are probably birds and fish. mammals and reptiles. fungi. invertebrates. multicellular plants.
Invertebrates , Many species are found in remoter environments smaller species receive less attention than large organism and cataloging these species is a huge task.Most of the world's species remain undiscovered by science.
Biologist classified that 1.7 million plants and animals as 2010 , less than one quarter of total species estimated in the world by the help of new techniques in molecular biology. They figure out that still over five million species are yet not be found.
The new species like amphibians and reptiles are most undiscovered animals having limited ranges that may inaccessible. Creatures which are smaller and inhabit limited area are more likely to have been overlooked.
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What is a geostrophic wind? Why would you not expect to observe a geostrophic wind at the equator?
A theoretical wind known as the geostrophic wind is produced when the Coriolis effect, as well as the pressure difference forces, are balanced (PGF). It is a decent estimate for the wind reported at middle latitudes at an altitude of greater than 1 km. Given that there is no Coriolis effect near the equator, there can be no geostrophic wind.
What does "geostrophic wind" mean?
Geostrophic flow, as used in atmospheric research, is the fictitious wind that would emerge from a precise balancing act between the Coriolis effect and the pressure difference forces. The term "geostrophic equilibrium" or "geostrophic balance" refers to this situation (also known as geostrophy). Parallel to the isobars is where the geostrophic wind is pointed. In nature, this equilibrium seldom occurs perfectly. Because of these factors, the genuine wind and geostrophic wind nearly never match up.
The location of geostrophic winds:
At elevations exceeding 1000 meters (3300 feet), geostrophic wind can be found. With the use of weather balloons, the geostrophic wind velocity may be calculated. At heights up to 100 meters, the ground surface has a significant impact on winds.
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Which best describes the process of insertion?
occurs when part of a chromosome breaks off and is placed into the middle of another chromosome
occurs when part of a chromosome breaks off and reattaches backward on the same chromosome
occurs when part of a chromosome breaks off and does not reattach
occurs when part of a chromosome breaks off and attaches to another chromosome
The term "occurs when a part of chromosome breaks off and is placed in the middle another chromosome" describes the process of insertion.
What is mutation?The alteration of gene sequence that cause a change in gene behavior is called as mutation.The sequence of DNA in chromosomes can be altered in a number of ways including substitution, deletion, duplication, insertion, and inversion.What is insertion?The insertion is a process of mutation which changes the sequence of DNA by adding nucleotides to the gene sequence.As the result of insertion, the activity of genes can be altered, or the derived protein won't function in a proper manner.The segment of DNA added may be small like a single base but can bring out significant variation in size.Interchromosomal insertion is the insertion of a segment of the chromosome into an interstitial region of a non-homologous chromosome.Intrachromosomal insertion is the translocation of a chromosome segment into a different region of the same chromosome.The effects of insertion vary depending on the size, gene content, and orientation of the inserted fragments. An example of insertion mutation is fragile X syndrome. In this mutation, 200 CGG nucleotide repeats are inserted into the gene segment and made it non-functional.To learn more about Insertion, refer: https://brainly.com/question/13041683
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Answer: (D) occurs when part of a chromosome breaks off and attaches to another chromosome
Explanation: EDGE 2023
how do carbon dioxide and oxygen move in and out of a mesophyll cell
In the dna isolation process, ________ is used to break down the protein complexes and allow the dna molecules to easily precipitate.
In the DNA isolation process, ice cold 95% ethanol is used to break down the protein complexes and allow the DNA molecules to easily precipitate.
What is separation and isolation of DNA fragments?
The cutting of DNA by restriction endonucleases results in the fragments of DNA. These fragments can be separated by a technique known as gel electrophoresis. Since, DNA fragments are negatively charged molecules they can be separated by forcing them to move towards the anode under an electric field through a medium/matrix. The most commonly used matrix is agarose which is a natural polymer extracted from sea weeds. The DNA fragments separate (resolve) according to their size through sieving effect provided by the agarose gel. Hence, the smaller the fragment size, the farther it moves.The separated DNA fragments can be visualised only after staining the DNA with a compound known as ethidium bromide followed by exposure to UV radiation (you cannot see pure DNA fragments in the visible light and without staining). We can see bright orange coloured bands of DNA in a ethidium bromide stained gel exposed to UV light. The separated bands of DNA are cut out from the agarose gel and extracted from the gel piece. This step is known as elution. The DNA fragments purified in this way are used in constructing recombinant DNA by joining them with cloning vectors.To learn more about DNA isolation process: https://brainly.com/question/18316109
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The sensory endings of intrafusal muscle fibers __________ when the muscle lengthens and __________ when it shortens
The sensory endings of intrafusal muscle fibers stretch when the muscle lengthens and relax when it shortens.
Intrafusal muscle fibers are skeletal muscle fibres that serve as specialized sensory organs (proprioceptors). They detect the amount and rate of change in length of a muscle. They constitute the muscle spindle, and are innervated by both sensory (afferent) and motor (efferent) fibers.
There are two types of intrafusal muscle fibers:
Nuclear bag fibers Nuclear chain fibersThey bear two types of sensory ending, known as annulospiral and flower-spray endings. Both ends of these fibers contract, but the central region only stretches and does not contract.
Intrafusal muscle fibers are walled off from the rest of the muscle by an outer connective tissue sheath consisting of flattened fibroblasts and collagen. This sheath has a spindle or "fusiform" shape, hence the name "intrafusal".
Function :
Intrafusal muscle fibers detect the amount and rate of change in muscle length. It is by the sensory information from gamma motor neurons and beta motor neurons that an individual is able to judge the position of their muscles.
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What is the term for a group of species more closely related based on sharing the same adaptive zone and modified features?
a. species
b. family
c. genus
The Genus is the term is which is used to define a group of species more closely related based on sharing the same adaptive zone and modified features.
Genus, which is plurally known as genera is a group of the related living things (as plants or as animals) that the family in the scientific classification and is made up of one or more species.
Genus is the first word of a binomial scientific name and some of its examples are: plant genus containing many species is Rosa, which contains more than 100 species of roses; another example is: all the species of mushrooms that are part of the Amanita family.
The important point to note here will be that the scientific name of a genus, is always capitalized; the generic name or generic epithet; the generic name can be abbreviated, e.g. L. angustifolia.
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A seal and a shark eat the same kind of fish.
What ecological interaction describes the relationship between the seal and the shark?
Choose 1 answer:
A: Predation
B: Commensalism
C: Competition
D: Mutualism
Answer:
The correct answer is A.Predation
The ________, which is still developing during adolescence, is a part of the brain responsible for judgment, impulse control, and planning.
The prefrontal cortex, which is still developing during adolescence, is a part of the brain responsible for judgment, impulse control, and planning.
Define brain and its various parts.
The cerebrum, cerebellum, and brain stem are the three major components of the brain. The brain's main structure, the cerebrum, is made up of the right and left hemispheres. Higher cognitive tasks include understanding touch, vision, hearing, speech, logic, emotions, learning, and fine motor control, among others.
It is the most complex part of the human body.
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Give four functions of the mouth in the digestive process
Answer:
receive food by ingestionbreak it into small particles by masticationmix it with salivamoistens foodAnswer:
The four functions of the mouth in the digestive process is given below:
Explanation:
1. Digestive process starts from mouth.
2. It moistens food so it move more easily through esophagus into stomach.
3. Mouth produces saliva which has an enzyme that begins to break down starches in food.
4. Mouth chews food and digestion involves breaking down the food into simpler nutrients that can be used by cells.
Calcium reabsorption by the kidneys is promoted by the hormone: cortisol. calcitonin. aldosterone. parathyroid hormone. adh
Calcium reabsorption by the kidneys is promoted by the hormone parathyroid hormone.
What is parathyroid hormone?The parathyroid glands emit a peptide hormone known as parathyroid hormone, sometimes known as parathormone or parathyrin, which regulates the serum calcium content through acting on the gut, kidney, and bone.One or more of the parathyroid glands are hyperactive in primary hyperparathyroidism. The gland thus produces an excess of parathyroid hormone (PTH). Too much PTH raises calcium levels in the blood, which can result in health issues like kidney stones and bone weakening.The following processes are stimulated by the parathyroid hormone: bones' release of calcium into the blood. The intestines' absorption of calcium from meals. kidneys' preservation of calcium.Hypoparathyroidism is a condition in which parathyroid hormone secretion or activity is low. This lack of PTH causes blood phosphorus and calcium levels to rise and fall, respectively.
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Air spiraling rapidly inward toward the center of a hurricane does not make it all of the way to the center because of?
Coriolis effect ,which deflects air that is being drawn into the surface low -pressure center , setting up a cyclonic rotation. Air spiraling rapidly inward towards the center of hurricane in counter clockwise pattern in the northern hemisphere and clockwise in the southern hemisphere.
At the center of the storm , air sink , forming an eye which is mostly cloud free and cross section of typical hurricane. Gravitational disturbance which we can called as density waves, rippling slowly through a galaxy and caused it to wind up and generate the spiral appearance.
Outside the eye-wall of hurricane rain-bands spiral inwards towards the eye-wall. Air flowing flowing inward warms adiabatically causing additional heat to be added to the storm. Inward flowing air flowing adiabatically heat from the warm ocean below.
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The hormone that dominates during the alarm phase of the general adaptation syndrome (gas) is?
The hormone that dominates during the alarm phase of the general adaptation syndrome (gas) is adrenaline.
Produces CRH, which is then released, causing the pituitary to generate ACTH. Synthesizes and releases ACTH, which instructs the adrenal glands to release cortisol. Hormones important for the stress response are released. The adrenal medulla produces epinephrine, sometimes known as adrenaline. This is the first stage of global adaptation syndrome. Your body is currently alerting your brain that something is wrong. The body responds to the brain's message by releasing glucocorticoids and adrenaline, which are known as your "fight or flight" hormones. The general adaption syndrome has three stages: alarm, resistance, and fatigue. Alarm, fight, or flight is the body's first response to "perceived" stress.Learn more about hormones here brainly.com/question/4581245
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In pasteur's swan-neck flask experiment, the importance of the s-shaped curves in the flasks was twofold. the curves allowed entry of air but excluded?
Answer: The exclusion of microbes, such as bacteria and spores.
Explanation:
The swan-neck flask broth was able to remain sterile because the "dips" of the flask's neck acted as a reservoir to contain microbes that managed to get in through the open mouth.
Use your knowledge of microorganisms to complete this table.
Bacteria are prokaryotes, fungi and protists are eukaryotic organisms and viruses are not living.
In what ways it is possible to distinguish prokaryotes from eukaryotes?Bacteria (e.g., E coli) are prokaryotic organisms whose cells don't have nuclei or membrane bound organelles, reproduce by asexual ways such as binary fission, and they are beneficial as descomposers.
Some common diseases caused by bacteria include tetanus (Clostridium tetani), pneumonia (Klebsiella pneumoniae), cholera (Vibrio cholerae), etc.
Moreover, protists (e.g. algae) and Fungi (e.g. Saccharomyces cerevisiae) are eukaryotic organisms that have cell nuclei and organelles, can reproduce by asexual reproduction, can perform photosynthesis (algae) or acts as decomposers (fungi).
Some common diseases caused by protists/protozoans include malaria (Plasmodium), sleeping sickness (Trypanosoma), etc.
Some common diseases caused by fungi include aspergillosis (Aspergillus), candidiasis (Candida albicans), etc.
Finally, viruses are not living because they need a host to survive and are also useful as vectors to design gene therapy techniques.
Some common diseases caused by viruses include AIDS (HIV retrovirus), dengue fever (Flaviviridae viruses), etc.
Bacteria are used to produce insulin and other natural medications, viruses are used as carriers for the treatment of diseases, protozoans can enhance the fertility of soils and fungi are employed in the preparation of foods.
In conclusion, bacteria are prokaryotes, fungi and protists are eukaryotic organisms and viruses are not living.
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The constancy of the chromosome number from one cell generation to the next is maintained through.
Through mitosis, the number of chromosomes is kept constant from one cell generation to the next.
What occurs during mitosis?A cell divides into two identical daughter cells after duplicating all of its components, including its chromosomes. Due to the importance of this procedure, specific genes carefully regulate each phase of mitosis. Health issues like cancer may develop when mitosis is improperly controlled.
How many phases of mitosis are there?Prophase, pro metaphase, metaphase, anaphase, and telophase are these stages.
What function does mitosis serve?Mitosis' purpose is to divide the genome so that the two daughter cells inherit an identical and equal number of chromosomes.
Where in the cell cycle does mitosis occur?The mitotic phase, which consists of mitosis and cytokinesis and produces two daughter cells, begins after interphase. Despite the fact that the two processes frequently overlap, mitosis occurs before cytokinesis.
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Which compound would most likely experience only london dispersion forces between its moleucles?
The nonpolar compounds are most likely to experience only London dispersion forces between molecules
When two atoms share electrons evenly, a type of chemical bond known as a non-polar covalent link is created. The number of electrons shared by the neighboring atoms in an atom will therefore be equal. Because of the largest minor difference in electronegativity in non-polar, the covalent bond is also referred to as nonpolar.
The least powerful intermolecular force is the London dispersion force. When the electrons in two nearby atoms occupy positions that cause the atoms to temporarily form dipoles, the consequence is the London dispersion force, a transient attractive force. The term "induced dipole-induced dipole attraction" is frequently used to describe this effect.
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A. what is hard water? why is the presence of hard water often considered a negative thing? (3 points)
Hard water contains mineral ions basically the calcium and magnesium ions.
The presence of hard water often considered a negative thing as it is associated with a number of issues related to plumbing, water storage as well as cleaning and maintenance.
Hard water leads to clogged pipes due to the deposition of ions on the surface of water conducting pipes. This hindrance also degrades the quality of equipment used for water storage and heating e.g. geysers.
The hardness of water can either be temporary or permanent depending on the type of ions present in it. Temporary hard water contains calcium and magnesium ions whereas Permanent hard water contains anions like the sulfate ion.
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What process occurs in box a? what process occurs in box a? electron transport glycolysis the citric acid cycle electron transport and oxidative phosphorylation oxidative phosphorylation
Glycolysis occurs in the cytosol.
Process that occurs in boxA electron transport chain is a series of four protein complexes that couple redox reactions forming an electrochemical gradient that leads to the creation of ATP in a complete system named oxidative phosphorylation. It occurs in mitochondria in both cellular respiration and photosynthesis. Glycolysis occurs in the cytoplasm of the cell and does not require oxygen, whereas the Krebs cycle and electron transport occur in the mitochondria and do require oxygen. Glycolysis is the metabolic pathway, that converts glucose into pyruvate. In it oxidation of glucose is involved.
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For a given antibiotic, is there a difference in susceptibility between the gram-positive and gram-negative bacteria?
For a given antibiotic, is there a difference in susceptibility between the gram-positive and gram-negative bacteria due to the structure of their cell wall.
The cell wall of gram-positive bacteria consists of a single thick layer composed of peptidoglycans. On the other hand, the cell wall of gram-negative bacteria is made up of three layers.
The first layer is the outer membrane, the second layer is the peptidoglycan layer and the third layer is the inner membrane made of phospholipid bilayer.
The outer membrane of Gram-negative bacteria is the mainly responsible for resistance to a wide range of antibiotics including β-lactams and other antibiotics.
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The structure of the cell membrane was discovered in 1895 by _________. finding a similarity to olive oil, he discovers membranes are made of __________.
In 1895, Ernest Overton proposed that cell membranes were made of lipids
According to the lipid bilayer theory, which Gorter and Grendel put forth in 1925, the cell membrane bilayer structure can be described using crystallographic research and observations of soap bubbles.
What is Cell membrane ?All cells have a cell membrane, also known as a plasma membrane, which separates the interior of the cell from the external environment.
A semipermeable lipid bilayer makes up the cell membrane. The movement of materials into and out of the cell is controlled by the cell membrane.Biological membranes serve three main purposes. First, they prevent harmful substances from entering the cell. Second, they have receptors and channels that let certain molecules, like ions, nutrients, wastes, and metabolic products,Third, they divide metabolic processes that are necessary but incompatible that take place within organelles.Learn more about Cell membrane here:
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Why are ganymede and callisto geologically dead while the other two galilean moons of jupiter are active?
Ganymede & Callisto are low-density moons with a mixture of ice and rock. They are farther from Jupiter and are geologically dead.
The four largest moons of Jupiter, Io, Europa, Ganymede, and Callisto, are known as the Galilean moons or Galilean satellites. Galileo Galilei initially observed them in December 1609 or January 1610, and in March 1610, he identified them as Jupiter satellites. They were the first discovered extraterrestrial objects orbiting a planet other than the Earth.
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A type of learning in which a stimulus acquires the capacity to evoke a response that was originally evoked by another stimulus is known as?
A type of learning in which a stimulus acquires the capacity to evoke a response that was originally evoked by another stimulus is known as classical conditioning.
In classical conditioning, a stimulus gains the ability to elicit a response that was first elicited by another stimulus. Almost by accident, Pavlov made this type of learning discovery while studying the canine digestive system.
He had surgically inserted a tube into a dog's salivary gland, which was used to collect the saliva the dog made after being given food powder to chew on. Before they were given food, several of Pavlov's dogs started to salivate.
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