Correct Option is ( C) Smallest as well as slowest firing type of rate to the largest and fastest type of firing rate. For muscle type of recruitment patterns, it is also crucial to say a precept that governs the order of recruitment, termed Henneman's length precept.
It states that smaller muscles are recruited first as they may be particularly fatigue resistant and convey small quantities of pressure The accurate order of systems of a muscle from smallest to biggest is: muscle fiber, endomysium, fascicles, perimysium, epimysium.
Motor very commonly recruited so as of smallest to biggest (smallest motor neurons to biggest motor neurons, and as a consequence sluggish to speedy twitch) as contraction increases. This is called Henneman's length precept. Based at the dimensions, the above-cited systems may be organized withinside the following manner from the most important to the smallest component: Muscle fiber → Myofibril → Sarcomere → Thin-filaments →Troponin. Therefore, the best series of order is 5, 2, 3, 4, 1.
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Correct Question:
According to the size principle of motor recruitment, in what order will muscle fibers be recruited during activity?
a). Smallest and fastest firing rate to largest and slowest firing rate.
b). Largest and fastest firing rate to smallest and slowest firing rate.
c). Smallest and slowest firing rate to largest and fastest firing rate.
d). Largest and slowest firing rate to smallest and fastest firing rate.
if you exhale to residual volume, close your glottis and relax your chest muscles, what will happen to your alveolar pressure?
The lungs will desire to elastically recoil, but because the glottis is closed, there is nowhere for the air to escape, alveolar pressure will rise above atmospheric pressure.
The thoracic cavity capacity increases and the intra-alveolar pressure falls when the diaphragm slides downward from an ambient pressure of 760mmHg to 756mmHg. Air enters the lungs as a result of a pressure gradient. The muscles of the external intercostals also aid in inspiration.
The alveolar pressure is b. larger than the ambient pressure during the process of expiration. As a result, air will escape from the lungs and alveoli.
The lungs' volume expands and their internal pressure drops to below atmospheric levels during inhalation.
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chromium-51 is a radioisotope that is used to assess the lifetime of red blood cells the half-life of chromium-51 is 27.7 days. how much time is required for the activity of a sample of chromium-51 to fall to 26.6 percent of its original value?
is 27.7 days for chromium-51.Phosphorus-32 is among the radioactive isotopes that is utilized in medical diagnosis or therapy.Phosphorus-32 has a half-life of 14 days.
Where does chromium-51 come from?In a reactor, neutron activation generates Cr.It has a radioactive ½ of 27.7 days and decays by electron capture.At 320 keV, just a little bit above the ideal detection range of conventional gamma counters, the primary gamma-photon emission is produced by electron capture.
What makes chromium 51 significant?Red blood cells are labeled with chromium 51 to measure their mass or volume, conduct survival rates and sequestration experiments, and diagnose gastrointestinal bleeding.Additionally, platelets are labeled with chromium 51 to analyze their functions.
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which of the following represents the correct sequence of structures through which blood moves from the venae cavae to the lungs
Right atrium, right ventricle, left atrium, and left ventricle will be the correct order in which blood passes from the vena cava to the lungs.
Which tissues should blood pass through in the right order as it travels from the Venae Cavae to the lungs?It travels from the heart to the lungs via the vena cava to the right atrium, where it then passes through the tricuspid valve to the right ventricle and into the pulmonary trunk.
What should the blood flow do in the right order?Right atrium is where the blood enters first. The right ventricle is subsequently entered when the blood passes through the tricuspid valve. The ventricle of the heart contracts to force blood past the pulmonic valve and into the pulmonary artery.
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Q5: How many cells can you see preparing to divide in the root tip?
Q6: How many cells can you see preparing to divide in the leaf?
50 cells can see preparing to divide in the root tip.
Mitosis produces two new cells from one parent cell.
What is cell division and its stages?Mitosis and meiosis are the two distinct processes of cell division. When people talk about "cell division," they typically mean mitosis, which is the process of creating new cells for the body. The cell division process known as meiosis is what produces egg and sperm cells. A vital process for life is mitosis.Prophase, prometaphase, metaphase, anaphase, telophase, and cytokinesis are the five stages that traditionally make up mitosis.When a parent cell splits to create two identical daughter cells, the process of nuclear division known as mitosis takes place in eukaryotic cells. Mitosis refers specifically to the division of the duplicated genetic material contained in the nucleus during cell division.Learn more about cell division refer to :
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Which of these is a product (something that
is produced) of cellular respiration?
A. Sunlight
B. Carbon dioxide
C. Oxygen
Answer:
Carbon dioxide
at some point, categories like herbivore/parasite/predator break down. (for example, small insects that eat small amounts of large plants, over a long time, seem to conform to the definition of a parasite.) why is this?
At some point, categories like herbivore/parasite/predator break down, this is because the categories are artificial constructs- the organisms don't care.
Herbivores feed on plants products and plants. They are also considered as predators because they also transfer energy across the trophic levels. Besides this, they also keep the population of their prey under control. The predator is defined as an animal which feeds upon other animals or prey that are usually smaller and weaker than itself. Therefore, at some point all these categories are artificial constructs for better understanding- organisms don't care.
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Complete question- At some point, categories like herbivore/parasite/predator break down. (For example, small insects that eat small amounts of large plants, over a long time, seem to conform to the definition of a parasite.) Why is this? a) Newly discovered organisms (or viruses) may not fit existing categories. b) the categories are artificial constructs--the organisms don't care c) scientific knowledge--including categorizations like this--is continuously updated as new data become available d) Herbivory, parasitism, and predation can change over time, in response to natural selection.
what connections can you make between homeostasis and the reproductive system in the concept map? select all that apply.
Little is done by the reproductive system to maintain the organism's equilibrium. Instead, the reproductive system is related to the preservation of the species.
How is homeostasis maintained in the reproductive system?The reproductive system ensures the progeny survives in order to preserve homeostasis. The reproductive system does this by creating eggs and sperm, ensuring that these cells are transported, caring for children, and producing hormones.
What connections does the reproductive system have to other systems?Sex hormones influence other bodily systems in the reproductive system, and if there is an imbalance, it can result in a number of illnesses and potentially fatal problems. Disease or even death could result from the body's inability to maintain homeostasis.
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a class section was trying to determine the ideal habitat for a large lizard that eats a variety of arthropods using biotic and abiotic information. the guiding question for this investigation was: which habitat has the most abundant food source for a species of lizard that eats a variety of arthropods (lizard
The most abundant food source for a species of lizard that eats a variety of anthropods is warm, or wood habitats.
In order to keep their body temperature stable, lizards bask in the hot sun before moving to cool cover and burrows. Because lizards are only active when their bodies are at their ideal, warm temperature, the desert's warm, sunny climate is great for them. Thus, they prefer a habitat that can be provided a suitable environment to them with a good supply of food sources like arthropods or insects.
Since they are natively insectivorous, common house lizards enjoy eating insects. They regularly consume spiders, snails, caterpillars, and various insects. Lizards are considered to be reptiles. They have the ability to split apart and develop new tails. They can independently move their eyes because they can see in two directions at once. Even if they bite, they are safe.
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The first step of dna replication begins with which of the following steps
Answer:
atoms
Explanation:
Drag the probabilities on the left to the blanks on the right to answer the questions. Terms can be used once, more than once, or not at all.
1. What is the probability that an F2 seed chosen at random will be yellow? 3/4
2.What is the probablity that an F2 seed chosen at random from among the yellow seeds will breed true when selfed? 1/3
3. What is the probability that three F2 seeds chosen at random will include at least one yellow seed? 63/64
4. What is the probability that three F2 seeds chosen at random will include one green seed and two yellow seeds? 27/64
The probability that an F2 seed chosen at random will be yellow is 3/4, and among the yellow seeds that will breed true when selfed is 1/3, will include at least one yellow seed is 63/64, one green seed, and two yellow seeds is 27/64.
A monohybrid cross occurs when two individuals are heterozygous for a single trait cross. A monohybrid cross has a phenotypic ratio of 3:1 for its F2 offspring.
The dominant Y allele is yellow,
and the recessive y allele is green.
Monohybrid cross: Yy (yellow) * Yy (yellow)
Gametes of father: Y, y
Gametes from a mother: Y, y
F2 offspring: YY (yellow), Yy (yellow), Yy (yellow), yy (green)
F2 genotypic proportion:1(YY):2(Yy):1(yy)
F2 phenotypic ratio of the offspring:3(yellow):1 (green)
according to the question:
1. The probability of a yellow F2 seed being selected at random:3/4
The phenotypic ratio of the offspring when two heterozygous individuals (Yy * Yy) are crossed is 3 (yellow):1 (green).
The probability of an F2 seed being yellow (YY or Yy) is 3/4, and the probability of an F2 seed being green (yy) is 1/4.
2. The probability that an F2 seed selected at random from the yellow seeds will successfully self-fertilize: The homozygous genotype (YY) is present in 1/3 of true-breeding yellow seeds.
The phenotypic ratio of the F2 offspring is 3 (yellow):1(green). One of the three yellow F2 seeds is homozygous (YY), while the other two are heterozygous (Yy).
The probability of an F2 yellow seed truly reproducing (YY) is 1/3, and the probability of an F2 yellow seed being heterozygous (Yy) is 2/3.
3. Probability that three randomly selected F2 seeds contain at least one yellow seed:1/4 * 1/4 * 1/4 = 1/64
The probability that three F2 seeds chosen at random will contain at least one yellow seed is 1 - P(all three F2 seeds are green) = 1 - 1/64 = (64 - 1)/64 = 63/64, so the probability is 63/64
4. probability that three F2 seeds picked random will include one green seed and two yellow seeds:27/64
There are three possible outcomes for this:
i. first green, second yellow, and third yellow = 1/4 * 3/4 * 3/4 = 9/64
ii.1st yellow, 2nd green, and 3rd yellow equal 9/64
iii. First yellow, second yellow, and third green = 3/4 * 3/4 * 1/4 = 9/64
The probability is that three randomly selected F2 seeds will contain one green and two yellow seeds = 9/64 + 9/64 + 9/64 = 3 (9/64) = 27/64,
so the probability is 27/64.
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6. bacterial strategies for evading host defense systems a.different parts of the host defense system work together to eliminate invading bacteria.give some examples of how virulence factors could work together to make a pathogenbetter able to cause infection.
The virulence factors help a pathogen to invade, cause and evade the host.
Movement and attachment also are crucial issues for bacterial virulence. The flagella, which aids in movement, can assist micro organism unfold. The flagellum is a key virulence thing in urinary tract infections as it facilitates the micro organism unfold up the urethra. The shorter filaments are Pilli. The following are varieties of virulence factors include many pathogenic micro organism colonize mucosal web sites via way of means of the usage of pili (fimbriae) to stick to cells.
Therefore, pathogenic micro organism colonize mucosal web sites.
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in the experimental scheme used by gregor mendel, the f1 generation is to generate the f2 generation.
Yes the F1 generation is to generate the f2 generation.
P, or parental generation of plants were were crossed to produce F1 generation (first filial). Mendel saved the seeds that each cross's P plants produced and planted them the following year.
These offspring were referred to as the F1, or the first filial generation (a filial is a daughter or son). Mendel allowed plants to naturally self-fertilize after examining the traits in the F1 generation of plants. He then saved the seeds from the F1 plants and raised them to create the F2, or second filial generation.
This whole experiment was done on pea plant whose scientific name is Pisum sativum.
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white fibers that transmit impulses between corresponding areas in the opposite cerebral hemisphere are called:
Commissural fibres transmit impulses between corresponding areas in opposite cerebral hemisphere.
What are Commissural fibres?
Commissural fibers or commissural tracts of the brain or commissures are the fibres responsible for connecting an area in one hemisphere with an area in the opposite hemisphere. They are a type of white matter. The largest set of commissural fibers in the brain is the corpus callosum, and is a pathway of crucial importance for speech-language functions.
The Commissural fibres consist of anterior commissure, the hippocampal commissure, and the corpus callosum.
The Commissural fibres are responsible for ensureing that both sides of the brain can communicate and send signals to each other.
Therefore, Commissural fibres transmit impulses between corresponding areas in opposite cerebral hemisphere.
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identify the molecular approaches that have helped determine evolutionary relatedness in prokaryotes.
Yes. Convergent evolution is the process by which unrelated or distantly related animals acquire similar features while having unrelated predecessors. Prokaryotic organisms have the ability to express these genes by absorbing DNA from their environment.
Similar features will result from the expression of these genes in different organisms.Prokaryotes can be split into two classes based on their evolutionary history: bacteria and archaea.Archaea and bacteria, originally known as Eubacteria (formerly Archaebacteria). Eukaryota, the third domain, is designated for organisms containing nuclei.Prokaryotes are creatures without a nucleus or other organelles in their cells.The microorganism and the archaea, which scientists accept as true and have unique evolutionary lineages, are two magnificent groups that make up the prokaryote kingdom.The majority of prokaryotes are tiny, single-celled organisms with a very straightforward structure.
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Which of the following best describes the structure of hemoglobin? Select all that apply.
a. Globin molecules contain iron.
b. Hemoglobin consists of four globin molecules.
c. Hemoglobin consists of two globin molecules.
d. Each globin molecule associates with numerous heme groups.
e. Each globin molecule surrounds a heme group.
f. Heme groups contain iron.
Hemoglobin contains the iron atom and the four globin molecules. Heme is the group containing iron atom. Each globin molecule surrounds a central heme group to which a polypeptide chain is joined up. Statements b, e and f.
What is the central atom in the structure of hemoglobin ?Iron is the central atom in the structure of hemoglobin.
The structure of hemoglobin is composed of four protein chains.There are 4 iron atoms in each molecule of hemoglobin. Each globin molecules is consisted of two linked pairs of polypeptide chain.
Each hemoglobin molecule is composed of two alpha chains and two beta chains and each is linked with a heme group that is containing a central metal that is iron.
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(5 pts.) in dogs, alleles c and c determine whether a dog has curly (cc), wavy (cc), or straight hair (cc). in a cross of a curly-haired dog with a straight-haired dog, what will be the phenotypic ratio of the offspring? what will be the genotypic ratio?
Considered to be a "dominant" gene characteristic is curly hair. Straight hair is viewed negatively. Simply put, you will be born with curly hair if one parent passes on a gene for curly hair and the other parent passes on a gene for straight hair.
Straight and curly hair are both partially dominant alleles of the same gene. Two curly alleles result in extremely curly hair. Straight hair is a result of having two straight alleles. One straight allele and one curly allele results in wavy hair. Children born with semi-curly or wavy hair are an example of a person displaying incomplete dominance because such offspring are produced by crossing parents who have both straight and curly hair alleles. Uneven hair is a
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explain how the diameters of the afferent and efferent arterioles affect the rate of glomerular filtration.
When the afferent arteriole is larger, more blood would flow into the efferent arteriole, which is of a smaller diameter, resulting in increased blood pressure in the glomerulus.
The arteriole that carries blood to the glomerulus is known as the afferent arteriole. Its diameter exceeds that of the efferent arteriole.
Due to their smaller width than afferent arterioles, efferent arterioles carry blood away from the glomerular, causing resistance to the blood flow that causes backflow and high pressure. Greater blood flow into the smaller-diameter efferent arteriole occurs when the afferent arteriole is larger, raising the blood pressure in the glomerulus.
The renal artery's afferent arteriole is a branch that supplies the glomerulus with blood. A branch of the renal artery called an efferent arteriole carries blood away from the glomerulus. Blood is transported to the glomerulus via afferent arterioles.
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chrloroplasts cannot move on their own how do you think they move around the cell what is this movement called
Cyclization or cytoplasmic streaming is a term that describes the movement of chloroplasts within plant cells.
They push, slide, and dart inside the cell, often catching on the edge of the cell, but sometimes appearing to fill the cell completely with constant movement. This movement is common inside cells and is called cyclonic or cytoplasmic flow.
Chloroplasts migrate in response to varying light intensities. Under low light, chloroplasts cluster in illuminated areas to maximize the rate of light absorption and photosynthesis (storage reaction). In contrast, chloroplasts escape intense light to avoid photodamage (avoidance response).
This idea is motivated by the fact that chloroplasts have their own DNA, separate from plant cells. However, over time, this bacterium becomes dependent on plant cells and vice versa, unable to survive or replicate itself could not proliferate.
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which of the following statements are true concerning the eye? check all that apply. which of the following statements are true concerning the eye?check all that apply. farsightedness can be corrected with a diverging lens. the far point of the normal eye is infinity. nearsightedness can be corrected with a diverging lens. astigmatism refers to a defect in which the surface of the cornea is not spherical. instead, it is more sharply curved in one plane than another. the hyperopic eye focuses rays from an object at infinity in front of the retina; the myopic eye focuses rays from an object at infinity behind the retina. request answer
An irregularly shaped cornea results in astigmatism, which blurs light because it enters the retina at various focal points. The presence of astigmatism can cause one or both eyes to be nearsighted, one or both to be farsighted, or one eye to be nearsighted while the other is farsighted.
It can also happen astigmatism due of the lens's internal curvature in some cases. It happens when the cornea, the eye's transparent front surface, is unevenly shaped. In order for light to properly focus on the retina, astigmatism the light-sensitive area at the back of the eye, it must pass through a cornea or lens that has an irregular shape.
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what happens when the xist gene from an x chromosome is inserted into an autosome? both the autosome and its homologous chromosome are inactivated
The Xist transgene (Tg) integrated into the autosome can induce transcriptional silencing of neighboring genes. However, the effects and mechanisms of Xist RNA on autosomal sequence silencing remain elusive.
Xist or Tsix heterozygous mutations cause non-random X chromosome inactivation in female cells. When the expression of Xist increases from the X chromosome in cells before X chromosome inactivation, the X chromosome always becomes XI, and wild-type X always becomes XA. Xist encodes an RNA molecule that plays an important role in selecting the X chromosome to remain active, and the early spread and establishment of silencing on the inactive X chromosome allows the XIST RNA to enter interphase non-active cells. We smear the active X chromosome as evidence for the involvement of new RNAs. Nuclear/chromosomal structure. Inactivation of the X inactivation. chromosome is mediated by stabilization of the Xist RNA. Stabilization of Xist RNA mediates initiation of X inactivation.
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FILL IN THE BLANK. If you split a hydra in half, you would expect to see ___________________, which is an example of ______________ regeneration.
If you divided a hydra in half, you would anticipate seeing each half arrange itself to form a smaller hydra, which is an illustration of morphallactic regeneration.
What is morphallactic regeneration?
Morphallactic is the regeneration of certain tissue in a variety of species as a result of the loss or demise of the existing tissue.
The Cnidarian hydra serves as a famous illustration of morphallactic regeneration because when the animal is split in half (for instance, by actively cutting it with a surgical knife), the leftover halves combine to produce two fully autonomous and functional hydra.
The distinguishing characteristic of morphallactic regeneration is that a significant portion of the regenerated tissue originates from the organism's pre-existing tissue. That is, the hydra's single severed section transforms into a miniature hydra that is roughly the same size as the severed section. As a result, there occurs a tissue "exchange".
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I need help figuring out which letters go with the code letters.
Answer: *this is in order*
TCA
GAA
GCT
CAT
GCC
Explanation:
these are the coding letters and what they equal to
A = T
T= A
G = C
C= G
compare different types of leaves, such as a hibiscus leaf and a grass leaf. Do the veins of the leaves have the same pattern
The, so called, veins in leaves, ie. venation, are the transport cells of the leave carrying water from the roots and the sugar products of photosynthesis down to the rest of the plant. Other chemicals also travel along these ‘highways’ eg. minerals, hormones, etc.
The, so called, veins in leaves, ie. venation, are the transport cells of the leave carrying water from the roots and the sugar products of photosynthesis down to the rest of the plant. Other chemicals also travel along these ‘highways’ eg. minerals, hormones, etc.In addition, because of the rugged nature of the cells of which the veins are constructed, they offer a degree of strength and support for the shape and orientation of the leaf. These cells are remarkably durable. There are few things in Nature more beautiful than a leaf that has rotted away all except the
venation.
Hope it helps
what and who came from uranus private part?
Answer: The Greek Goddess Aphrodite
Explanation:
An object at rest is suddenly broken apart into fragments a and b by an explosion. The fragment a acquires five times the kinetic energy of the fragment b.
The explosion will conserve momentum in one dimension. When An object at rest is suddenly broken apart into fragments a and b by an explosion.
In plain English, what is kinetic energy?The force that drives motion, which can be observed in the movement of a particle, an object, or a collection of particles, is known as kinetic energy. Examples of objects in motion that use kinetic energy include a person walking, a baseball being thrown, a piece of food falling from a table, and a charged particle in an electric field.
Given that fragment a gains three times as much kinetic energy as fragment b, Pinitial = pfinal 0 =mav0a+mv0=0 v0=-mav0a/m
KE=3KE, where 1/2 mav0a2 = 3 (1/2mv0), and
1/2 mav0a2 = 3/2 m(-mav0a/m).
2 "1/2 x 2/3 = ma/m= 1/3" "1/2 x 2/3 = ma/m= 1/3" "1/2 x 2/3 = ma/m= 1/3"
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during sexual reproduction of ciliates, group of answer choices the macronuclei undergo meiosis. all four nuclei disintegrate. the apical complex creates a bridge between cells. ascospores of opposite sexes mate. the micronuclei undergo meiosis and mitosis.
Ciliates can reproduce asexually through different types of fission. The macronucleus elongates and goes through amitosis during fission, while the micronucleus goes through mitosis (except among the Karyorelictean ciliates, whose macronuclei do not divide).
The micronucleus and the macronucleus are then duplicated in each of the two new cells that result from the cell's division.
Ciliate passing through the last stages of binary fission in a transversal division, the ciliate's anterior half (the porter) forms one new creature and the posterior half (the opisthe) forms another. Other forms of fission do, however, take place in some ciliate groupings. These include strobilation (multiple divisions along the cell body, forming a chain of new creatures), budding (the appearance of little ciliated offspring, or "swarmer's," from the body of a mature parent), and palintomy (multiple fissions, usually within a cyst).
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the part of the nephron whose epithelial cells are most responsible for resorption and secretion is the
Proximal convoluted tubules (PCT) is the part of the nephron whose epithelial cells are most responsible for resorption and secretion.
What are nephrons?
The fundamental structural component of the kidney is the nephron. The function of a nephron is to remove waste products and poisons from the blood, separate water, ions, and tiny molecules, and then restore necessary molecules to the circulation. Ultrafiltration is how the nephron works. Blood pressure-induced ultrafiltration occurs when minute breaches in capillary walls allow for the passage of water and other small molecules.
The proximal tubule is the portion of the kidney's nephron that extends from the renal pole of the Bowman's capsule to the start of the loop of Henle. By secreting hydrogen ions (acid) into the tubule and reabsorbing around 80% of the filtered bicarbonate, the proximal tubule effectively controls the pH of the filtrate. Reabsorbed into the peritubular capillaries is fluid from the filtrate that enters the proximal convoluted tubule. Sodium is transported into the blood from the lumen by the Na+/K+-ATPase found in the basolateral membrane of the epithelial cells. This P-type ATPase is the main enzyme responsible for sodium reabsorption; 60–70% of the filtered sodium load is reabsorbed in the proximal tubule via active transport, solvent drag, and paracellular electrodiffusion.
Substances are delivered into the PCT via secretion after being drawn out of the circulation. This opens up a different pathway for chemicals to enter the tubular lumen, which is particularly helpful because only 20% of the blood is filtered in the glomerulus per minute. The PCT secretes:
Catecholamines, oxalate, and bile salts are examples of organic acids and bases (waste products of metabolism).
Maintaining the body's acid-base balance depends on hydrogen ions (H+). Utilizing the enzyme carbonic anhydrase, H+ secretion enables the reabsorption of bicarbonate . In the end, one molecule of bicarbonate and one molecule of Na+ are reabsorbed into the bloodstream for every molecule of H+ released.
Drugs/Toxins: The H+/OC+ exchanger on the apical side of the tubule cell, which is fueled by the Na+/H+ antiporter, is the mechanism by which organic cations like dopamine or morphine are secreted.
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When a nucleotide is added to a growing nucleic acid strand during DNA replication, the incoming monomer is ___ and the energy required to drive the polymerization is derived from ___
O a nucleoside triphosphate; cleaving a pyrophosphate O a nucleoside monophosphate; cleaving ATP X O an RNA primer; cleaving a pyrophosphate O a nucleoside triphosphate; DNA polyme O DNA, RNA
When a nucleotide is added to a growing nucleic acid strand during DNA replication, the incoming monomer is a nucleoside triphosphate and the energy required to drive the polymerization is derived from cleaving a pyrophosphate.
Nucleotides are the monomers of nucleic acids, DNA and RNA. The nucleotide consists of a nitrogenous base (adenine, thymine, guanine, cytosine, or uracil), a phosphate group (PO43−), and a 5-carbon sugar. A nucleoside triphosphate is a molecule containing a nitrogenous base attached to a 5-carbon sugar, with three phosphate groups attached to the sugar.
Pyrophosphate cleavage produces PPi as one of the products. PPi is one of the energy sources used in DNA replication
So that in the DNA replication stage the monomer used is nucleotide triphosphate and one of the energy is PPi from the pyrophosphate cleavage process.
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what triggers depolarization? what channels open? what occurs if the depolarization threshold is reached?
A stimulus opens some sodium channels. Na+ inflow through channels depolarizes membrane. If threshold is reached, it triggers action potential.
A stimulus is a perceptible alteration in the internal or external surroundings of an organism's physical or chemical composition. Sensitivity is the capacity of an organism or organ to recognise external stimuli and to respond appropriately to them. A stimulus is an occasion or any change in the environment that causes an organ or tissue to have a certain functional response. An external or internal trigger is possible.
When you enter a room, you must cross a threshold. A threshold separates one space from another, and you are also on a threshold just before beginning something new. A threshold is a starting or stopping point. The maximum amount of money permitted per transaction is known as a Threshold Amount.
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in bacterial cells, the tryptophan operon encodes the genes needed to synthesize tryptophan. what happens when the concentration of tryptophan inside a cell is high?
In bacterial cells, the tryptophan operon encodes the genes needed to synthesize tryptophan.
What happens when the concentration of tryptophan inside a cell is high, it activates the tryptophan repressor, which shuts down expression of the tryptophan operon.
Correct answer: letter C.
When the concentration of tryptophan inside a cell is high, the tryptophan repressor binds to the operon, preventing its expression.
This is known as a negative feedback mechanism, as the increased concentration of tryptophan shuts down its own synthesis. This helps to ensure that the cell does not waste resources on excess tryptophan synthesis when the cell already has enough.
What are bacterial cells?Are single-celled organisms that are found everywhere in the environment. A bacterial cell is composed of prokaryotic cells which are much simpler than the cells of other organisms. They have a cell wall that protects the cell, a small cytoplasmic membrane, and a single circular DNA molecule that contains the genetic information of the cell. Bacterial cells use energy to produce proteins and other molecules necessary for their survival. They reproduce by splitting into two daughter cells.
Complete question:
In the bacterial cell, the trytophan operon encodes the genes needed to synthesize tryptophan. When the concentration of typtophan inside the cell is high:
A) It inactivates the tryptophan repressor which shuts down the tryptophan operon.B) It inactivates the tryptophan repressor allowing transcription of the tryptophan operon.C) It activates tytophan repressor which shuts down the tytophan operon.Learn more about the bacterial cell:
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