A respiratory device involving a surgical opening in the neck into the trachea is:________.
Answer:
A tracheostomy
Explanation:
A tracheostomy is an opening created at the front of the neck so a tube can be inserted into the windpipe (trachea) to help you breathe. If necessary, the tube can be connected to an oxygen supply and a breathing machine called a ventilator.
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Normal human cells have ________ chromosomes while gametes have ________ chromosomes.
Answer:
Normal human cells have 46 chromosomes while gametes have 23 chromosomes.
Protein kinase a, which stimulates glycogen degradation, is activated directly by?
Protein kinase a, which stimulates glycogen degradation, is activated directly bym cyclic AMP.
What is glycogen?Animals, fungi, and bacteria all use the multibranched polysaccharide of glucose known as glycogen to store energy. The primary form of glucose storage in the body is represented by the polysaccharide structure.Our cells primarily use glucose as fuel. The liver and muscles store the glucose when the body doesn't need to use it for energy. Glycogen is the name given to this form of glucose that is stored and is composed of several linked glucose molecules.Although only liver glycogen directly contributes to the release of glucose into the circulation, maintaining a healthy blood glucose concentration is one of glycogen's key functions.The body uses glycogen as a major energy reserve.For instance, liver glycogen controls homeostasis and blood sugar levels.On the other hand, muscle glycogen aids in physical exercise by allowing skeletal muscles to contract.
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Red maple tree seeds are dispersed by the wind. this species of tree can be found in fields, woods, and even wetlands. this is an example of a ________ distribution.
Red maple tree seeds are dispersed by wind. This is an example of Anemophilic distribution.
Maple tree seeds are lightweight They have wing like outgrowth.Maple tree have efficient seed dispersion system.The seeds descend to the ground known as Samaras.Learn more about Anemophily here, https://brainly.com/question/13976657?referrer=searchResults
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The entire complex of concentric rings and cells that surround a single central canal is called a/an?
The entire complex of concentric rings and cells that surround a single central canal is called a/an osteon.
What is osteon?An osteoclast-rich tissue creates cylindrical vascular tunnels called osteons. They include cutting cone-shaped endosteum and pluripotent precursor cells. The cutting cone replaces the bone with osteoblast-rich tissue.The Haversian canal is surrounded by the osteon, the main structural component of compact (cortical) bone, which is made up of concentric bone layers termed lamellae.Osteons, also known as Haversian systems, are the building blocks of compact bone structure. Osteons are spherical organs made up of a mineral matrix, live osteocytes, and canaliculi that carry blood. They are positioned parallel to the bone's long axis. The structural component of compact bone are osteons. Also known as the Haversian system, osteons consist of overlapping cylinders of bone tissue called lamellae.
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What five factors determine the amount of runoff in an area?
The quantity of rain, vegetation, soil type, landform, and human use of the land are the five key determinants of runoff in a region.
What is Runoff?Runoff occurs when there is more water than the land can absorb. The extra liquid drains into surrounding creeks, streams, or ponds after flowing across the land's surface. Both natural processes and human activities can produce runoff.Snowmelt is the most well-known kind of natural runoff. Heavy snowfalls that mountains cannot absorb result in runoff that eventually forms streams, rivers, and lakes. Rain, snow, and glaciers all play a part in this organic discharge.Additionally, runoff happens naturally as soil erodes and is moved to different bodies of water. Even harmful substances are carried into streams by natural events like volcanic eruptions. Volcanic gases eventually make their way back into the water or land as precipitation.Large urban, suburban, or rural regions can all be nonpoint sources of runoff. In some locations, irrigation and rains both wash chemicals into nearby streams. Lawn fertiliser, vehicle exhaust, and even gasoline from a spilled car are examples of nonpoint source runoff. As fertilizers and pesticides are discharged into bodies of water during irrigation and rain, farms represent a significant nonpoint source of runoff.Runoff is accelerated by impervious surfaces or surfaces that cannot absorb water. Impervious surfaces include parking lots, walkways, and roads. Materials as various as car-washing soaps, trash, and gas station spill end up in a runoff.The quantity of rain, vegetation, soil type, landform, and human use of the land are the five key determinants of runoff in a region.
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The rainfall duration, topography of storm movement, soil ,land use are the determining factor of runoff.
What is Runoff?
Runoff occurs when the water is more as comparative to land for absorption.
Factors of Runoff:
1)The rainfall duration is directly proportional to runoff ,more the duration of rainfall more will be runoff.
2) Runoff will be more at smooth surface as compare to rough surface.
3) The land pattern have significant role in affection on runoff.The surface full of grass there will be more absorption so,less runoff.
4)Type of soil also effects the runoff ,some soils have less ability to absorb water but some have more ability.
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What effect does stimulating the vagus nerve have on heart rate? from which subdivision of the autonomic nervous system (ans) does the vagus nerve carry motor fibers?
What happens when vagus nerve is stimulated?
Vagus nerve stimulation stabilizes aberrant electrical activity in the brain by stimulating the vagus nerve with the help of an implanted pulse generator and lead wire. Anti-seizure medications don't completely work for about one-third of epilepsy patients.Why is vagus nerve stimulation used?
Vagus nerve stimulation (VNS) uses the vagus nerve to provide regular, gentle electrical pulses to the brain in an effort to prevent or decrease seizure activity. The procedure involves implanting a device under the skin in the left chest area.Learn more about vagus nerve stimulation
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What are the three general rules for genes that follow a mendelian pattern of inheritance?
X-linked, autosomal dominant, and recessive are the three general rules for genes that follow a mendelian pattern of inheritance
When two alleles of a single gene, one of which may be entirely dominant over the other, are present, simple (or Mendelian) inheritance refers to the transmission of features that are governed by that gene. Whether simple features are governed by genes on autosomes or by genes on sex chromosomes determines the pattern of inheritance.The laws of dominance, segregation, and independent assortment are among Mendel's laws of inheritance. According to the law of segregation, each person has two alleles, but only one of them is passed on to the next generation.Three basic principles define mendelian inheritance: Genes are passed down from generation to generation unchanged, with the exception of exceptional cases; each gene follows Mendel's law.Learn more about the mendelian pattern of inheritance here https://brainly.com/question/12147497
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Which are tunics (layers) that make up the gastrointestinal wall?
The gastrointestinal wall is composed of four layers or tunics:
MucosaSubmucosaMuscularis mucosa SerosaThe innermost tunic of the wall is known as the mucosa or mucous membrane layer. The digestive tract's lumen is lined with it. The mucosa comprises epithelium, a layer of lamina propria, a loose layer of connective tissue, and the muscularis mucosa, a thin layer of smooth muscle.
The mucosa is surrounded by a substantial layer of loose connective tissue known as the submucosa. Blood arteries, lymphatic vessels, and neurons are also present in this stratum. The adventitia is a connective tissue that makes up the digestive tract's outermost layer above the diaphragm. It is referred to as serosa below the diaphragm.
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Identify the letter that indicates where most nutrient and waste exchange occurs between the tissue and blood
A indicates where most nutrient and waste exchange occurs between the tissue and blood i.e., the capillaries
In the capillaries, waste, nutrients, and gases are exchanged between the blood and tissue. Small blood arteries called capillaries create networks surrounding body cells by branching off from arterioles.In the lungs, capillaries release carbon dioxide for expiration and take oxygen from the air that has been inhaled into the bloodstream.Because capillaries are so tiny, only one blood cell can pass through them at a time. These capillaries allow nutrients and oxygen to reach the cells. Wastes from the cells can be transported to the blood through capillaries and veins.learn more about capillaries here: https://brainly.com/question/13047198
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The final product of glycolysis is pyruvate. Under aerobic conditions, pyruvate is converted to?
Hi there,
I hope you and your family are staying safe and healthy!
The answer is: Acetyl - CoA
So basically Glycolysis is the process by which glucose is broken down within the cytoplasm of a cell to form pyruvate. Then under aerobic conditions, pyruvate can diffuse into Mitochondria and then convert to Acetyl-CoA as aerobic metabolism continue.
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What structure in the male reproductive system produces most of the seminal fluid?
Seminal vesicles are the structures of the male reproductive system that produce most of the seminal fluid.
What are seminal vesicles?Seminal vesicles are a part of the male reproductive system. They are present in a pair and are attached to the vas deference near the bladder.
They are also called seminal glands even though they are made of both glandular tissues and muscular tissues. They produce the seminal fluid which eventually forms the semen when combined with sperms.
The seminal fluid prepared by these vesicles makes up about 80% of the total volume of semen. It contains various components which help the sperms survive and travel through the vagina for fertilization.
Therefore, most of the seminal fluid in the male reproductive system is produced by the seminal vesicles.
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The laboratory analysis of a blood or urine sample to determine how much of a certain nutrient is present in the sample is an example of a(n)?
Osmolality tests is performed to determine the level of a certain nutrient present in the blood and urine.
What is osmolality test?
Osmolality tests measure the level of certain substances in blood, urine, or stool.
The level of glucose(sugar), urea( waste product made in the liver), sodium, potassium, and chloride are measured in osmolality test.
Osmolality test is also performed to check the balance between water and certain chemicals in blood.
Osmolality test also done to diagnose dehydration .
Therefore,osmolality test is done to determine the level of a certain nutrient in blood or urine sample.
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Before a molecule of mrna can be translated into a protein on the ribosome, the mrna must first be transcribed from a sequence of dna. True or false?.
Answer:
True.
Explanation:
Information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA) which is what is called Transcription, and mRNA is later translated into a polypeptide sequence(Protein) which is what is called Translated. The whole process is called the Central Dogma.
Cells will usually divide if they receive the proper signal at a checkpoint in which phase of the cell cycle?
Answer:
M phase
Explanation:
While there are many checkpoints within the cell cycle, the specific checkpoint you are referring to most likely takes place in the M (mitosis) phase.
Before the M phase (which includes the G1, S, and G2 phases), the cell grows, the number of organelles increases, and DNA replicates. After the G2 phase, the M phase begins. At the beginning of this phase, the DNA condenses, lines up in the center of the cell, attaches to spindle fibers, and is pulled to opposite ends of the cell. If this checkpoint receives the proper signal, the actual division of the cell will occur.
What is steinbock's opinion of the case in which the infant with down's syndrome was allowed to die through passive euthanasia?
What is steinbock's opinion of the case in which the infant with down's syndrome was allowed to die through passive euthanasia because Doctors merely withheld treatment so it was morally acceptable.
Passive euthanasia means intentionally allowing a patient die by prohibiting artificial life support such as a ventilator or feeding tube. Some ethicists distinguish between withholding life support and withdrawing life support .Steinbock believes that in a few situations it is acceptable for a doctor to intentionally terminate a patient's life. A treatment that counts as ordinary care in one situation may count as extraordinary care in a different situation. Steinbock believes that a quick death is always acceptable then a lingering one.
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Why did it take more generations of complete selection to reduce q from 0. 1 to 0. 01 (a 0. 09 change) compared that for a 0. 5 to 0. 1 reduction (a larger, 0. 4 change)? explain
Zygotic selection against dominant alleles is more efficient than selection against recessive alleles. It can take fewer than 100 generations to eliminate a dominate delterious allele with an initial frequency of 0.70.
According to hardy- Weinberg equilibrium scientist have observe at-least two generation. Allele frequencies are the same for both generations then the population is in the Hardy- Weinberg equilibrium. The frequency of heterogeneous individuals are equal to 2pq.
In case of 2pq equals 0.32 which means that the frequency of individuals heterozygous for this gene is equal to the 32%. Hardy- Weinberg equation is , p=the frequency of dominant allele in a population.q= frequency of recessive allele in a population.
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The genetic recombination of ________ caused massive, widespread epidemics that affected the global human population several times in the twentieth century.
The genetic recombination of human influenza A caused massive, widespread epidemics that affected the global human population several times in the twentieth century.
What is influenza ?Influenza is a disease caused by virus which is contagious.It is different from a normal cold as it shows severe symptoms than flu.
Influenza is caused by influenza virus and people get infected when they breathe in tiny airborne droplets from the cough or sneezes of infected person.
Outbreaks of influenza A virus occurred in twentieth century.During 1918 influenza pandemic was the most dangerous pandemic.
Therefore, the genetic recombination of human influenza A caused massive, widespread epidemics that affected the global human population several times in the twentieth century.
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The enzyme produced in the kidneys that may play a role in essential hypertension by promoting vasoconstriction is called ___________.
Answer:
the answer is Renin
Explanation:
The enzyme produced in the kidneys that may play a role in essential hypertension by promoting vasoconstriction is called renin.
Renin is an enzyme released by specialized cells in the kidneys called juxtaglomerular cells. It plays a critical role in regulating blood pressure and fluid balance.
It acts on a protein called angiotensinogen, which is produced by the liver and released into the bloodstream. Renin cleaves angiotensinogen to produce angiotensin I. Angiotensin I is then converted to angiotensin II by the action of the enzyme angiotensin-converting enzyme (ACE). Angiotensin II is a potent vasoconstrictor.
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Adaptation to terrestrial life required major evolutionary changes. The change from gill breathing to lung breathing was accompanied by important changes in the ____________________________. manufacture of blood cells association of blood and interstitial fluid cardiovascular system reproductive system
The correct answer is 'association of blood and interstitial fluid.'
The cardiovascular system is made up of the heart, blood vessels, and blood. Its primary function is to transport nutrient- and oxygen-rich blood to all parts of the body while returning deoxygenated blood to the lungs. Abnormalities or damage to any one or all of the cardiovascular system's components may result in serious health problems. Common diseases that can affect the cardiovascular system include coronary artery disease, heart attacks, excessive blood pressure, and stroke. The circulatory system moves blood from the heart to the lungs where it is oxygenated. The heart pumps oxygenated blood through the arteries to the rest of the body. Veins bring oxygen-depleted blood back to the heart to restart circulation.
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For this discussion, please create two questions about homeostasis and the relationships between the immune, endocrine, and nervous systems. Your questions should address how the actions of one system are balanced by another, and vice versa. For example, do you think the eye reflex to make tears (nervous system) would be necessary if the immune response to substances on the eye were stronger? Or if our endocrine system raised our body temperature two degrees, would our immune system become weaker because using a fever to fight infection would be less necessary?
Two questions about homeostasis may be how endocrine signaling may affect the immune responses and how the nervous system work together with the endocrine signaling.
What are endocrine signals?Endocrine signals are different molecules called hormones that are released by specialized cell types and travel to the bloodstream to carry out functions in the body.
Endocrine signaling affects immune responses (e.g., inflammation) and both neural and endocrine signaling may affect different types of homeostatic responses.
In conclusion, endocrine signaling may affect the immune responses and the nervous system work together with the endocrine signaling.
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How does a high humidity level alter the sweat evaporation process and make an individual susceptible to a heat illness?
High humidity level alters the sweat evaporation process and make an individual susceptible to a heat illness
Evaporation is the heat loss caused by perspiration. The body loses heat mostly in this way. High relative humidity inhibits the body's primary cooling mechanism by reducing this heat loss. As a result, developing Heat Illness is more likely when there are high relative humidity levels.
A liquid transforms into a gas during evaporation. It is simple to picture when puddles of rain "vanish" on a hot day or when wet clothing dries in the sun. In these instances, the liquid water is evaporating into a gas known as water vapor rather than really dissipating. Evaporation results from heat, which is necessary to separate the water molecules from one another.
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What is the most common explanation for circadian rhythm dysregulation in modern society?
Answer choices:
We live in a society
Blue light from device screens
CLOCK gene mutations from plastics
The sun
The most common explanation for dysregulation of circadian rhythm in modern society is blue light from device screens
Blue light from device screensWhat happens if the circadian rhythm is dysregulated?The most frequent symptoms are insomnia and drowsiness, decreased vitality and performance, which may increase the risk of accidents at work, increased rate of breast, colorectal and prostate cancer, increased blood pressure, increased gastrointestinal disorders and problems reproductive.
What are the effects caused by blue light?Using electronics that emit blue light for more than 6 hours a day can cause headaches, eye strain and premature retinal aging. There are two types of blue light: turquoise and violet.
With this information, we can conclude that Circadian rhythms are physical, mental, and behavioral changes that follow a 24-hour cycle.
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Some individuals inherit an xx chromosome pattern but are exposed prenatally to drugs that are converted to male hormones once in the body. these individuals are likely to?
Individuals inherit an xx chromosome pattern but are exposed prenatally to drugs that are converted to male hormones once in the body have masculinized genitalia and behave in more 'masculine ways'.
Person normally has one pair of sex chromosomes in each cell. The Y chromosome is present in males, who have one X and one Y chromosome, while females have two X chromosomes. Identifying genes on each chromosome is an active area of genetic research.
In general Gender schema theory proposes that children learn schemes related to gender from their interactions with other children and adults, as well as from TV program and films. Such schema or stereotypes have the function of organizing and structuring other information that is presented to children.
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Which is NOT a benefit to alternative resources? *
O tend to cost less
O accessible in our own country
O do not pollute our air
Owind and solar energy are not always available
Helppp
Answer:
I think D
Explanation:
From where can conservation geneticists collect dna samples to monitor endangered species?
DNA collecting samples helping species recover often depend, which can reveal valuable information about details ranging from inbreeding and population history to natural selection.
To measure the genetic diversity of particular gene, scientist look at how many different versions of it are present in a population.Use of molecular marker for identification of endangered species offer promise of conservation biology.
Conservation genetics is the application of genetics to understanding the decreasing population and species extincts.By effective managing these ecosystem we can help preserve threatens and endangered. It helps in determine evolutionary context of endangered species and enables the development of better management and strategies for endangered species.
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The collection of axons that carries information between the central nervous system and the peripheral effectors is called the:__________
In animal cells, glycolysis occurs in the __________.
a, nucleus.
b. inner mitochondrial membrane.
c. cytosol.
d. mitochondrial matrix.
e. outer mitochondrial membrane.
Meiosis is the process by which cells are produced from a cell that was originally diploid. True or false?.
True; meiosis is the process by which cells are produced from a cell that was originally diploid.
What is meiosis?
The production of offspring by sexual reproduction includes the fusion of two gametes, each with a complete haploid set of chromosomes. Gametes are formed from specialised diploid cells. This specialised kind of cell division that reduces the chromosome number by half results in the production of haploid daughter cells. This kind of division is called meiosis. Meiosis ensures the production of haploid phase in the life cycle of sexually reproducing organisms whereas fertilisation restores the diploid phase. Meiosis occurs during gametogenesis in plants and animals. This leads to the formation of haploid gametes.The key features of meiosis are as follows:
Meiosis involves two sequential cycles of nuclear and cell division called meiosis I and meiosis II but only a single cycle of DNA replication.Meiosis I is initiated after the parental chromosomes have replicated to produce identical sister chromatids at the S phase. Meiosis involves pairing of homologous chromosomes and recombination between them. Four haploid cells are formed at the end of meiosis II.To learn more about meiosis: https://brainly.com/question/7002092
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The antifungals known as polyenes interact with ________, a lipid unique to fungus membranes.
The antifungals known as polyenes interact with ergosterol, a lipid unique to fungus membranes.
What is fungus membrane?The fungus's homeostatic regulation depends on the sterol-, sphingolipid-, and glycerophospholipid-rich fungal membrane. Azoles impair the normal stability of the fungal membrane by inhibiting the enzyme lanosterol-14-demethylase (Erg11 or CYP51), which converts lanosterol to ergosterol. Unfortunately, the widespread use of these drugs has resulted in the development of resistance mechanisms, including the activation of efflux pumps, the development of biofilms, and the overexpression or active site mutation of CYP51. The creation of novel inhibitors able to overcome the resistance was made possible by the crystal structures of mutant CYP51 enzymes from Saccharomyces cerevisiae and Candida albicans in association with azoles.
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