which of the following will increase the rate of transcription? histone acetylation leading to chromatin decompaction d. histone methylation leading to chromatin compaction removal of rna polymerase

Answers

Answer 1

Option C. is correct, Gene expression levels have long been known to be significantly influenced by the state of chromatin, the packaging of DNA in eukaryotes. Several chromatin-altering techniques, such as ATP-dependent remodelling.

The cell uses histone modification to control the transcription of certain genes. Since several histone acetyltransferases have been discovered and further studied in recent years, histone acetylation is one of them that is most thoroughly understood. chromatin remodelling and histone acetylation A restrictive barrier to transcription is represented by chromatin. This molecular barrier is a highly dynamic structure that can fit the complete genome's DNA inside the limits of a nucleus while yet allowing access to the genetic material stored inside.

Which of the following will increase the rate of transcription?

a. Activation of a transcriptional repressor

b. Inhibition of a transcriptional activator

c. Histone acetylation leading to chromatin decompaction

d. Histone methylation leading to chromatin compaction Removal of RNA polymerase

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Related Questions

sexual selection in a population choose one: a. can lead to physical differences between the males and females of a species. b. does not lead to evolution. c. reduces genetic variation in the population. d. always favors individuals with a higher survival potential.

Answers

The right response is option a, which states that morphological distinctions between males and females of a species can result from sexual selection in a population.

The tail of a peacock is a good illustration of partner selection. Peahens choose peacocks with huge, vibrant tails, which allows those peacocks to mate more frequently and produce younger ones. The genes for a long, colourful tail will be passed down from the father to the male peachicks, who will inherit these genes and develop comparable tails. There are two main factors that influence sexual selection. One is the preference of one sex (typically females) for members of the opposite sex who display particular features. The other is higher strength, which (often in males) results in better success in courting females.

So, we can conclude that option a, which claims that sexual selection can lead to physical differences between males and females of a species in a population, is the appropriate response.

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which autonomic ganglion, located anterior to the ear, receives parasympathetic axons from the glossopharyngeal nerve (cn ix)?

Answers

Parasympathetic, sympathetic, sensory, and motor roots can all be found in the otic ganglion.

All branches of the mandibular division of the trigeminal nerve receive postganglionic parasympathetic secretomotor fibres from the otic ganglion. Additionally, the parotid gland receives sympathetic vasomotor fibres from it. The infratemporal fossa's medial side and the tiny parasympathetic ganglion known as the otic ganglion are both situated just below the foramen ovale. It functions as the glossopharyngeal nerve's functional partner and innervates the parotid gland to stimulate salivation. The auriculotemporal nerve most likely sends signals to the superficial temporal artery from the otic ganglia. Because migraine attacks involve the superficial temporal artery, this is clinically intriguing.

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sometimes, plants will reward their pollinators with something that benefits them. what is an example of a plant attractant that is also a pollination reward?(1 point)

Answers

Animals that perform pollination while visiting the bloom are rewarded with floral nectar, which is placed inside the flower close to the reproductive organs.

The majority of people are aware that flowers frequently generate nectar, which is vital for promoting pollination and supplying food for hummingbirds and insects. Few people are aware of the extra-floral nectaries, nectar-producing glands that are structurally separate from the flower and found in more than 2,000 plant species in more than 64 families, though they exist in these plants.

Animals that perform pollination while visiting the bloom are rewarded with floral nectar, which is placed inside the flower close to the reproductive organs. Extra-floral nectar has a role in so-called indirect defense by luring predatory herbivores—usually ants—or by discouraging them from feeding on the plant.

Therefore, the two forms of nectar-producing partnerships between plants and animals have long served as textbook illustrations of symmetric mutualism, in which plants supply food or benefits to animals in exchange.

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Answer: Nectar

Explanation:

Normal cells have a contact inhibition feedback mechanism that prevents the cells
from replicating when other cells are touched. A diagram of cells with contact
inhibition and cells without contact inhibition is shown.

Which statement best describes what will happen to cells in an organism that lack
contact inhibition?

ANSWER CHOICES

The cells will stop replicating once one layer is produced as other body cells will crowd them out.

The cells replicate into the food supply for each cell is used, causing each cell to die

The cells will continue to grow causing a tumor in the body

The cells will replicate normally replacing body cells that die

Answers

The statement that best describes what will happen to cells in an organism that lacks contact inhibition is that the cells will continue to grow to cause a tumor in the body.
The correct option is C.

What is contact inhibition in cells?

Contact inhibition refers to a process by which cells that are growing when they come in contact with each other will stop the growth of more cells.

Contact inhibition is a form of feedback inhibition mechanism that enables cells to prevent the excessive growth of cells in the body.

Normal cells have a contact inhibition feedback mechanism. However, some cells lack this feedback mechanism of regulation. Hence, the cells have excessive growth resulting in the formation of tumors.

Examples of cells that lack this feedback mechanism of regulation are cancer cells.

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1. as you travel up through the atmosphere it gets colder and colder the rate at which it gets colder is called the _______ rate and it is about ____ c per km of altitude
2. the less atmosphere over our heads, the _________ the lower the atmospheric pressure
3 the atmosphere weighs_______ kg per cubic centimeter
the atmosphere keeps the earth warm when light from the sun is reflected back from the earth as heat and trapped in the atmosphere it is called the _________
3. __________ smog occurs when sunlight reacts with chemicals from car exhaust
4. when coal is burned to make electricity it produces sulfur when the sulfur combines with rain to make sulfuric acids it is called _________

Answers

As you travel up through the atmosphere it gets colder and colder the rate at which it gets colder is called the "lapse rate" and it is about 6.5°C per km of altitude.

2. The less atmosphere over our heads, the "thinner" the lower the atmospheric pressure.

3. The atmosphere weighs about 1.2 kg per cubic centimeter. The atmosphere keeps the earth warm when light from the sun is reflected back from the earth as heat and trapped in the atmosphere it is called the "greenhouse effect."

3. "Photochemical smog" occurs when sunlight reacts with chemicals from car exhaust.

4. When coal is burned to make electricity it produces sulfur. When the sulfur combines with rain to make sulfuric acids it is called "acid rain."

What is lapse rate?

The lapse rate is the rate at which the temperature of the atmosphere decreases with an increase in altitude. It is usually expressed in degrees Celsius per kilometer of altitude.

The lapse rate is important because it determines how the temperature of the atmosphere changes with altitude, which in turn affects the formation of clouds and precipitation. The average lapse rate in the Earth's lower atmosphere is about 6.5°C per kilometer of altitude, but it can vary depending on local weather conditions and other factors.

Therefore, In general, the lapse rate decreases with an increase in humidity and the presence of clouds, and it increases with a decrease in humidity and the absence of clouds.

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Which of the following is a characteristic of offspring produced by meiosis, and does not characterize offspring produced by mitosis?

A.
four haploid cells with chromosomes and alleles that are genetically different than the parents

B.
four haploid cells with chromosomes and alleles that are genetically identical to the parents

C.
two diploid cells with chromosomes and alleles that that are genetically different than the parents

D.
two diploid cells with chromosomes and alleles that are genetically identical to the parents

Answers

Answer:

the answer is B I did this last week

Which of these shows an example of an insertion mutation?

Answers

The figure 3 shows an example of an insertion mutation.

What do you mean by insertion mutation?

An insertion is the addition of one or more nucleotide base pairs into a DNA sequence. This can often happen in microsatellite regions due to the DNA polymerase slipping.

Moreover, an insertion changes the DNA sequence by adding one or more nucleotides to the gene. As a result, the protein made from the gene may not function properly.

An insertion mutation occurs when an extra nucleotide is added to the DNA strand during replication. This can happen when the replicating strand "slips," or wrinkles, which allows the extra nucleotide to be incorporated.

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if natural fires and herbivores can both reduce the abundance of competitively superior plants, how should this affect the number of other plant species that can persist in the community?

Answers

It can cause woody plants to proliferate and outcompete plants that have adapted to fire, reducing the number of plant species that can survive in the community.

Resources are often scarce in a habitat, and many species could compete for them. Plants in a garden, for example, may compete for soil nutrients, water, as well as light. Interspecific competition has a negative overall effect on both species involved. That is, if the other species did not exist, each species would fare better.

Interspecies competition occurs when two species compete for the same limited resource. Both species suffer as a result of competition. The ecological role of a species is defined by the set of conditions, resources, as well as interactions that it requires. According to the competitive exclusion principle, two species cannot coexist if they occupy the same niche.

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The founder effect is an example of _______.

Answers

Answer:

The founder effect is an example of genetic drift

explanation:

A population has members with the same appearance and features, such members encounter similar problems in the environment they live in. Some members of the population start living in a different place due to some reason. In that new area, they form a colony and start to adapt to different environments. This is called the founder effect. This brings change into sets of genes causing genetic drift.

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Which option best describes a scientific consensus?(1 point)


A. a general agreement among a few scientists that is supported by experimentation and investigation


B. an observation made by a scientist that is supported by experimentation and investigation


C. a general agreement among many scientists that is supported by evidence and reasoning


D. an observation made by a scientist that is supported by evidence and reasoning

_______________________________________________________


How is “lock and key” used to describe the action of enzymes? (1 point)

A. Enzymes are able to create gaps in cell walls that allow products to leave cells.

B. Enzymes have a shape that specifically fits the reactants, like a key in a lock.

C. Enzymes have a shape that specifically fits the reactants, like a key in a lock.


D. Enzymes have a shape that specifically fits the products, like a key in a lock.

Answers

The option that best describes a scientific consensus is a general agreement among many scientists that are supported by evidence and reasoning.

The correct option is C.

The lock and key model of enzyme catalysis is described as follows:

Enzymes have a shape that specifically fits the reactants, like a key in a lock.

The correct option is B.

What is a scientific consensus?

A scientific consensus is a common agreement about a particular idea or theory that has achieved general acceptance among scientists.

A scientific consensus is arrived at after several corresponding experiments or research on a particular theory or idea by scientists all over the world.

When a scientific consensus is reached, the idea becomes a theory upon which other scientific ideas are based on and used to explain other ideas.

Enzymes are specific in their action and the mechanism of their action has been described using the lock and key model.

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A primary difference between transcription and replication is that transcription

Answers

Answer: Replication is the duplication of two-strands of DNA.

Explanation:

Transcription is the formation of single, identical RNA from the two-stranded DNA.

Transcription and replication are two closely related processes that are essential for the functioning of cells. However, they are not the same thing and have some important differences.

Transcription is the process by which the information in a gene is copied into a molecule of RNA. This involves the enzyme RNA polymerase binding to a specific sequence on the DNA molecule and using the information in the DNA to synthesize an RNA molecule that is complementary to the DNA. Transcription is the first step in the process of gene expression, which is the way that cells convert the information in genes into proteins and other functional molecules.

Replication, on the other hand, is the process by which cells make copies of their DNA. This is necessary for cells to divide and produce new cells, and it also plays a crucial role in maintaining the integrity of the genetic information over time. Replication involves the enzyme DNA polymerase binding to the DNA molecule and using it as a template to synthesize new strands of DNA. This process results in two identical copies of the DNA molecule, one for each of the daughter cells that will be produced during cell division.

In summary, the primary difference between transcription and replication is that transcription involves the synthesis of RNA from DNA, whereas replication involves the synthesis of DNA from DNA. Transcription is a crucial step in gene expression, whereas replication is essential for cell division and the maintenance of genetic information.

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Name a product of cellular respiration that is used as a reactant in photosynthesis? (SC.912.L.18.9)

02
O ATP
Glucose
CO 2

Answers

Carbon dioxide is a product of cellular respiration that is used as a reactant in photosynthesis (option 4).

What are the processes of photosynthesis and cellular respiration?

Photosynthesis is a metabolic pathway that plants and algae use to generate simple carbs such as glucose by using reactant carbon dioxide, water, and also sunlight.

Conversely, cellular respiration is a series of chemical reactions used by all aerobic cells in order to generate ATP, which is considered the energy coin of the cells. In cellular respiration, the reactants include foods such as glucose molecules and oxygen, while the products of this pathway include carbon dioxide and also the generation of ATP.

Therefore, with this data, we can see that photosynthesis and cellular respiration are different in terms of reactants and products and both metabolic pathways may be considered complementary in terms of the generation and use of substrates.

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Our sense of taste originally was thought to involve only the following four
sensations
A) sweet, salty, starch, and bitter.
B) salty, fatty, bitter, and sweet.
C) sour, bitter, sweet, and starchy.
D) bitter, sweet, sour, and salty.
E) fruity, fatty, silky, and coarse.

Answers

Answer:

D) bitter, sweet, sour, and salty

Explanation:

Our sense of taste originally was thought to involve only the following four sensations: bitter, sweet, sour, and salty. These four sensations are the primary tastes that humans can detect, and they are thought to be the basis of our sense of taste. Other tastes, such as fat and umami (savory), are thought to be detected by other senses, such as touch and smell.

Answer: C

Explanation:

Which of the following best describes the result of meiosis? Select 3 that apply.
WILL GIVE BRAINLIEST

Answers

The result of the process of meiosis is that it produces increased genetic diversity due to crossing over.

The correct option is C.

What is meiosis?

Meiosis is a type of cell division that results in the production of gametes or sex cells. Hence. meiosis is a form of cell division that occurs only during sexual reproduction.

During meiosis, the cells of the parent organism which have a pair of chromosomes or diploid number or 2n of chromosomes divide to produce the gametes which have the haploid number or n number of chromosomes.

Hence, the sex cells or gametes produced can fuse to form a zygote that has a pair of chromosomes or diploid number or 2n of chromosomes.

The process of meiosis results in genetic variation as it allows for the crossing over of genes, such that the genes of the offspring show a variation to that of the parents as well as among the offspring.

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which division of the piriform cortex produces representations of the features of odorant molecules?

Answers

The anterior division of the piriform cortex produces representations of the features of odorant molecules.

Piriform cortex is a region of the brain also called as pyriform cortex, situated in the cerebrum region. Its function is to regulate the mechanisms of the olfactory experiences. It is at the junction of the temporal and frontal lobes.

Odorant molecules are the ligands that bind to the odorant receptors present at the neurons of the body involved in the olfactory responses. They are names odorants because they perceive smell. The receptors of the odorant molecules are GPCRs. Odorants are of various types based on the type of functional group they possess.

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the archenteron of a mesolecithal embryo with holoblastic cleavage eventually develops into which structure?

Answers

The archenteron of a mesolecithal embryo with holoblastic cleavage eventually develops into digestive tract.

What do you mean by archenteron?

The archenteron (gastrocoel) is a hollow within an animal embryo there at gastrula stage of development. The anus, or , and the blastopore, which serves as the animal's entrance and entry to the outside world, are both formed by this opening. The stomach cavity is finally formed, in whole or in part, by the archenteron.

Where may one find archenteron?

The growing embryo's primitive gut, known as the archenteron or digestive tunnel, develops during gastrulation. It is the core cavity inside an embryo at the gastrula stage of development.

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here is a portion of a hypothetical dna sequence: 3' t t c g a a c c g a g 5' suppose this sequence is part of the template strand of a gene. the sequence of the rna transcript produced from this part of the gene would be:

Answers

Answer:

sequence of the RNA transcript produced from this part of the gene would be:

5' A A G C U U G G C U C 3'

Explanation:

The RNA transcript is produced by transcribing the DNA sequence into RNA using the enzyme RNA polymerase. During transcription, RNA polymerase reads the DNA sequence and uses it as a template to synthesize the complementary RNA sequence. Because RNA is single-stranded and DNA is double-stranded, the RNA transcript is complementary to the non-template strand of the DNA, not the template strand.

In the given DNA sequence, the non-template strand would be:

3' A A C G T T G G C T G 5'

The RNA transcript is produced by transcribing this non-template strand, so the resulting RNA sequence would be the complementary sequence:

5' A A G C U U G G C U C 3'

This RNA transcript would be the sequence of the RNA produced from the given DNA sequence.

Explain why the potential energy increases when ice starts to melt and becomes liquid water.
Enter your answer in the space below.
swer inside this box

Answers

Answer:

Explanation:

While the ice melts kinetic energy is being added to the particles. This breaks the bond and causes a change of state making the solid become a liquid.

Blood pressure is usually measured in the ________ artery with a sphygmomanometer.

Answers

Blood pressure is usually measured in the Brachial artery with a sphygmomanometer.

Select all true statements regarding gamma decay.

Answers

Gamma rays are the spectral particles with the highest energy and shortest wavelength. This form of decay does not result in the release of any particles from the nucleus.

What is a nucleus, and what does it do?

The spindle holds the alleles, which are the structures that house the genetic traits, and governs and regulates the functions of the cell. The nucleoplasm is the gel-like membrane that contains the nuclear parts are suspended.

Why is the nucleus the most significant cell?

Due to its role in the storage, retrieval, and copying of genetic material, the nucleus is regarded as among the most significant components of eukaryotic cells. The genetic material is housed in an organelle with two membranes.

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the dna with the gene of interest for a cloning experiment was left on the lab bench overnight (instead of storing it in the freezer). as a result, it was degraded. they didn't know the dna was left out and used it in the experiment. the plasmid, however, was stored correctly. the vector contains a gene for ampicillin resistance. after the transformation procedure, the bacteria were plated on media containing ampicillin. what results are expected from this faulty molecular cloning experiment?

Answers

In a molecular cloning procedure, the DNA to be copied is extracted from a target organism and split into smaller DNA fragments in a test tube using enzymes.

These pieces are subsequently joined with vector DNA to produce recombinant DNA molecules. After that, a host organism is given the recombinant DNA (typically an easy-to-grow,strain of E. coli bacteria). Recombinant DNA molecules will be duplicated alongside the host DNA in the resulting population of organisms. These are transgenic or genetically modified organisms because they have foreign DNA pieces. Thus, the term "clone" is frequently used to describe both the bacterial population and the recombinant DNA molecule. In actuality, molecular cloning refers to the scientific techniques utilised to put them together.The idea arose that different DNA sequences could be inserted into a plasmid and that these foreign sequences would be carried into bacteria and digested as part of the plasmid. That is, these plasmids could serve as cloning vectors to carry genes.

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what is the likely cause of the change in frequency of melanic moths in michigan (mustard-colored diamonds), in pennsylvania (blue squares), and at caldy common in england (red dots)?

Answers

Air pollution has decreased in all regions is the likely cause of the change in frequency of melanic moths in michigan (mustard-colored diamonds), in pennsylvania (blue squares), and at caldy common in england (red dots)

The peppered moth's evolution is an example of how air pollution during the Industrial Revolution caused directional colour changes in the moth population.

At that time, a manifestation of industrial melanism was the rise in the number of dark-colored moths. Later, as pollution levels dropped, the light-colored form once more took control. Charles Darwin's theory of natural selection underwent its first test with the industrial melanism in the peppered moth, which is still used as a standard illustration for explaining evolution.

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you are trying to identify an organism. this organism contains no muscle tissue. it is not diploblastic. it must be a

Answers

You are trying to identify an organism. It is an animal, but it does not have nerve or muscle tissue. It is neither diploblastic nor triploblastic. It is probably a sponge.

Ectoderm and endoderm are the two principal germ layers in a blastula that has diploblasty. Cnidaria and ctenophora are examples of diploblastic species, which arise from such blastulae and were once included in the phylum Coelenterata but were later split off due to greater understanding of their differences.

They can grow genuine tissue because of the endoderm. The gut tissue and related glands are included in this. On the other hand, the ectoderm develops into the epidermis, the nervous system, and, if any nephridia are present.

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scientists believe that perching birds originated on the continents of australia and antarctica. how would these scientists explain the discovery of ancient perching bird fossils in africa?

Answers

The concept that dinosaurs were the direct ancestors of birds was backed by new research on ancient specimens as well as by field finds of dinosaur and early bird species.

Numerous traits and behaviours that distinguish modern birds were also present in dinosaur forebears. Theropods were a class of meat-eating dinosaurs from which birds descended. Although birds originated from little theropods rather than gigantic ones like Tyrannosaurus rex, they nonetheless belong to the same group as the dinosaur. The earliest fossilised bird remains date back 150 million years. Since they have a foot structure that enables them to grip branches, many bird species, including the majority of songbirds, are also known as "perching birds." The shape of one toe at the back of the foot works as a pincher, stabilising the perched bird.

The complete question is:

Scientists believe that perching birds originated on the continents of Australia and Antarctica. How would these scientists explain the discovery of ancient perching bird fossils in Africa? A) At one time, the climate in Earth was consistent throughout the planet. B) The fossils may have been moved by man, animals, or Earth’s constructive and destructive processes. C) The birds originated in Africa, but migrated with human populations to Australia and Antarctica to Africa. D) During the life of Pangea, Antarctica, Australia and Africa were neighboring

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at the end of which week of the ovarian cycle should implantation occur (assuming there is an embryo)?

Answers

Answer:

first week

Explanation:

it takes 2 to 3 days tk get embryo

Which explains the role of a gene

Answers

The role of a gene is to transmit as physical and functional units the inheritance characters from one generation to the next.

What is a gene sequence?

A gene sequence is a given fragment of a single strand of the DNA molecule which contains a specific linear order of nucleotides that is used to synthesize a cognate RNA molecule such as a messenger RNA or mRNA, a sequence that then serves as a template in order to generate a protein by a process called translation.

The genes are considered the physical and functional unit of inheritance because it contains the information to transmit a particular phenotypic character.

Therefore, with this data, we can see that a gene sequence is a given fragment of DNA that may serve to create a protein in the individual and it serves to transmit phenotypic features from parents to offspring.

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Why are the differences between prokaryotic and eukaryotic translation of mRNA useful to humans?

Answers

For the regulation of genes during nutritional shortage and stress, development and differentiation, nervous system function, aging, and illness, translational control in eukaryotic cells is essential. Prokaryotes are able to respond quickly to environmental cues because transcription and translation happen simultaneously in the cytoplasm.

what are Prokaryotes ?

Any organism without internal membranes is referred to as a prokaryote, usually written procaryote. These organisms lack a defined nucleus and other organelles.

what is eukaryotic ?

eukaryotic can be explained as a living things with nuclei in their cells. Eukaryotes include all animals, all plants, all fungi, and many unicellular creatures.

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Remote sensing data helps scientists improve their understanding and predictions about climate change.

a. True
b. False

Answers

Remote sensing data helps scientists improve their understanding and predictions about climate change. This is a true statement.

It allows for the monitoring of Earth's surface, oceans, and atmosphere at various spatiotemporal scales, enabling the study of processes or long- and short-term events related to the climate.

Remotele sensing photos, which are captured with specialised cameras, are used by scientists to "feel" the Earth. Examples include: We can see considerably more from the air and space than we can from the ground because of the cameras on satellites and aircraft that snap photographs of large swaths of the Earth's surface.

For example, isotope ratios, elemental analysis, biomarkers, and biogenic silica are examples of chemical proxy records. When combined, these proxies allow us to recreate the climate from hundreds of millions of years ago.

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homo habilis displays a great deal of variability some scientists think that larger homo habilis fossils with wider faces and bigger teeth should be classified in their own species called

Answers

This cranium has a wider, flatter face, a larger brain, and larger teeth than other Homo habilis fossils, prompting some scientists to name it Homo rudolfensis.

The word habilis is based on a Latin word meaning 'handy' or 'skilful'. This species is known as "handy man" because stone tools were discovered near its fossil remains, and it is assumed that this species developed the ability to shape stone into tools. The following year, parts of a boy's skeleton were discovered at the site, and additional fossils from other people were discovered. Their brain size, hand and foot features, and evidence that they may have used stone tools all suggested that a new type of human ancestor had been discovered.

Their brain size, hand and foot features, and evidence that they may have utilised stone tools all suggested that a new type of human ancestor had been discovered.  They were officially recognised as new species in 1964, but their inclusion in the human genus Homo was contentious. Additional fossils, including the 1986 discovery of a partial skeleton, revealed that this species was more ape-like than previously thought.

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in multiple sclerosis the myelin sheaths around the axons of the brain and spinal cord are damaged and demyelination results. how does this disease manifest at the level of the action potential? i) action potentials move in the opposite direction on the axon. ii) action potentials move more slowly along the axon. iii) no action potentials are transmitted. in multiple sclerosis the myelin sheaths around the axons of the brain and spinal cord are damaged and demyelination results. how does this disease manifest at the level of the action potential? i) action potentials move in the opposite direction on the axon. ii) action potentials move more slowly along the axon. iii) no action potentials are transmitted. only i only ii only iii only ii and iii request answer

Answers

This attack causes inflammation and injury to the nerve sheath and ultimately to the surrounding nerve fibers. The process can result in multiple areas of scarring.

When the myelin sheath is damaged, the nerves do not conduct electrical impulses normally. Sometimes nerve fibers are also damaged. If the sheath can be repaired and regenerated, normal nerve function can return. However, if the sheath is severely damaged, the underlying nerve fiber may die. Your bodys immune system produces inflammatory substances that damage myelin and eventually kill the cells, oligodendrocytes, and Schwann cells that produce myelin. Where the myelin is attacked determines your symptoms. The destruction of the myelin sheath is called demyelination. Axonal demyelination leads to an increase in the refractory period for propagation of the action potential. Computer simulations were used to investigate the mechanism by which changes in the passive properties of the internodal membrane increase the refractory period.

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Which ordered pair is a solution of theequation?-3x + 5y = 2x + 3y what force must be exerted on the master cylinder of a hydraulic lift to support the weight of a 2500 kg car (a big car) resting on the slave cylinder? the master cylinder has a 1.93 cm diameter, while the slave's is 24.9 cm. 1900 n 150 n 15 n 4.1e 06 n 74 n t=10-x identify to dependent and independent variable Isosceles trapezoid ABCD is shown.ABDCWhich three statements are correct?ZBAC ZCADZACD ZACBZADC ZBCDADABACBCCD.BD Given current demographic trends, which groups will become increasingly important in the nation's political system? a. African Americans b. Hispanics PLEASE ANSWERE ASAPIf BC = 16.7 ft, what is AY? you are trying to identify an organism. this organism contains no muscle tissue. it is not diploblastic. it must be a By rounding to 1 significant figure, estimate10152 An organism with the genotype of AaXx can produce gametes containing _________ if the two genes are unlinked.a. either Aa or Xxb. either AX, Ax, aX, axc. AaXxd. AX or axe. None of the above. 4 Describe at least two different transformations or sequences of transformations thattransform square A to square B. How did the railroad influence European colonial powers in the 19 century A uniform plane wave with parallel polarization is propagating in a lossless dielectric medium (l is 1), and is incident obliquely onto a plane boundary with another lossless dielectric medium (u 2, E 2). (30%) (a) Derive the Snell's laws of reflection and refraction in terms of the refractive indices and angles. (b) Derive the general expressions for the reflection and the transmission coefficients of the EM field. Find such expressions in terms of the refractive indices if both media are nonmagnetic, i.e., M F M 240. (c) Derive the general expression for the Brewster angle. Find such an expression in terms of the refractive indices if both media are nonmagnetic. (d) Prove that, under the condition of no reflection, the sum of the Brewster angle and the angle of refraction is 90 if both media are nonmagnetic. (e) For total reflection to occur, find the condition for the medium property and the critical angle. nate is lifting weights to build muscle for the upcoming football season. while nate is in the gym lifting, a group of cheerleaders comes in to start practice. while the cheerleaders were watching, nate was able to do 10 reps more than he has ever accomplished in the past. this best illustrates: The poll tax, the literacy test, and the actions of the ku klux klan were all attempts to limit the effectiveness of which action taken by the federal government? Which equations are true for x = 2 and x = 2? Select two options O x2 4 = 0 O x2 = 4 O 3x2 + 12 = 0 O 4x2 = 16 O 2(x 2)2 = 0 When researchers in Australia studied older and middle-age skateboarders, it was found that the skaters used Let f:RS be a surjective homomorphism of rings with identity.(a) If R is a PID, prove that every ideal in S is principal.(b) Show by example that S need not be an integral domain. How is consciousness different to sub-consciousness ? The reason thriving teams rely on awareness is not to outperform other teams or each other, but to become ________ each other.credible tocompetitive withcommitted tofriendly withindispensable to En qu escuela estudio v t? (estudiar)