How does myelin increase the speed of the action potential?

Answers

Answer 1

It insulates the axon and assembles specialized molecular structure at the nodes of Ranvier. In unmyelinated axons, the action potential travels continuously along the axons.

For example, in unmyelinated C fibers that conduct pain or temperature (0.4–1.2 μm in diameter), conduction velocity along the axon is 0.5–2.0 m/s (as fast as you walk or jog).

I hope this helps have a great day :)


Related Questions

Which of the following statements about the light reactions of photosynthesis in chloroplasts is/are true?
A.
Chlorophyll (and other pigments) absorb light energy, which excites electrons.
B.
ATP is generated by photophosphorylation.
C.
The splitting of water molecules provides a source of electrons.
D.
None of these statements are true.
You may select zero, one, or many answers.
Submit response

Answers

Answer:

a, b, and c are true

True or False. There are only two broad categories called kingdoms.

Answers

Living things are divided into five kingdoms: animal, plant, fungi, protist and monera. Living things are divided into five kingdoms: animal, plant, fungi, protist and monera.

A change in the sequence of bases in a DNA molecule is know as

Answers

Answer:

A point mutation is a change in the base sequence of a DNA molecule.

Explanation:

Which of the following human actions negatively affect the water cycle by increasing evaporation?

Answers

Answer: Hydroelectricity

Explanation: None Sorry

Burning of fossil fuels adversely impacts on the water cycle that adversely affect the climate on Earth.

Human activity such as the burning of fossil fuels in vehicles and burning of wood for cooking have adverse effect on the earth's atmosphere. This burning of fossil fuels increase the temperature of the earth leads to global warming.

Raising the Earth's temperature means that there is an increase of evaporation, melting of glaciers and sea ice which imbalance the water cycle leads to flood and drowning of coastal regions of the earth so we can conclude that burning of fossil fuels adversely impacts on the water cycle that adversely affect the climate on Earth.

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Project: Modeling the Carbon Cycle
Create a poster that models the carbon cycle.
can anyone please help me with this

Answers

Answer:

thats the poster you can create now

hope its help

Temperature-sensitive alleles are an example of conditional alleles; at the permissive temperature, the gene has normal function, whereas at the restrictive temperature, the gene has mutant function. You are studying the E2F pathway and you obtain a temperature-sensitive CDK4 mutant. At the permissive temperature, CDK4 functions normally. At the restrictive temperature, CDK4 is non-functional. Would you expect cells to continue growing or stop dividing when at the restrictive temperature? Explain your answer.

Answers

When at the restrictive temperature, we can comfortably expect the cell to stop dividing, whilst continuing to grow

The E2F pathway in a cell is responsible for the transition from the G1 stage of the cell cycle to the S stage. The G1 stage is where a cell grows and expands before the duplication of its DNA.

The S stage stands for synthesis. This is the moment in the cellular cycle in which the DNA of the cell is copied in order to prepare for cellular division.

Therefore, if the transition from G1 to S is blocked by temperature restrictions, we can expect the cell to continue growing, but not divide.

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A hole in the skin causes platelets to
rush to the site and release a chemical
that releases more platelets. This is an
example of what type of mechanism?

Answers

Answer:

b number positive feedback

"A hole in the skin causes platelets to rush to the site and release a chemical that releases more platelets" is an example of a positive feedback mechanism. The correct option is B.

What is a positive feedback mechanism?

A positive feedback mechanism is a technique of the body in which the body works or secretes something to the body that is needed more in the body, and it is secreted in the body out of league and number.

Platelets are present in the blood. They are spherical and are colorless and small. They help in blood clotting when there is a cut or bleeding, it prevents loss of blood by clotting the blood.

So, in the hole of the body, there will be blood loss, and releasing more platelets would help in blood clotting.

Thus, the correct option is B. positive feedback mechanism.

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what is the chemical composition of earth's core?

Answers

Answer:  metal—specifically, iron and nickel.

Explanation: Unlike the mineral-rich crust and mantle, the core is made almost entirely of metal—specifically, iron and nickel. The shorthand used for the core's iron-nickel alloys is simply the elements' chemical symbols—NiFe.

hope this helps :)

List one difference and one similarity between the reproduction processes
of a frog and a woman.

Answers

The Answer:In both the sexes of frog, each gonad remains attached to the kidney of same side. In human special ligaments attach the gonads to body wall. In males, testes is not abdominal in location; these are present in scrotal sac.

Appearance*In most frog species, the female is larger than the male, so frog size relative to a standard can be a good method of gender identification. In some species, the female frog is darker in color than the male, and in others, the male is darker.

Typically, frogs lay eggs. This process usually occurs through external fertilization, where the female releases her eggs from her body into water. Then, the male releases his sperm to fertilize them.In this case, the eggs are fertilized inside the female's body before they are released.

PLEASE HELP MEEEEE
Which option distinguishes the outcome if the Farm Bill were to end subsidies to private growers, but continue to provide food stamp funding?


Wholesale commodities prices would increase and create a devaluing of food stamps.

Food stamp recipients would replace subsidies by spending more money on agriculture.

Farm prices would drop due to a higher supply of unsold goods but no demand change.


Aid would shift and all farmers receiving subsidies would receive food stamps instead

Answers

Answer:

‏Farm prices would drop due to a higher supply of unsold goods but no demand change.

Three plants are grown in the same environmental conditions with equal sunlight, water, and space to grow. One plant grew to have a purple flower while the other two grew white flowers. What is the most likely conclusion that can be made for the change in flower color?(1 point)

Genetic factors caused environmental changes that caused the differences in flower color.

Genetic factors caused the differences in flower color.

Environmental factors caused a genetic mutation that caused the differences in flower color.

Environmental conditions caused the differences in flower color.

Answers

Answer:

The second answer choice.

Explanation:

Genetic variation must be the answer as the plants were grown in the same conditions. Therefore, the only source of variability might be genetic variation.

The first choice is not the answer because Genetic factors cannot cause the environment around the plant to change.

The third choice is not the answer because the Environmental factors are the same, and if they were really to cause a mutation, all three plants would mutate.

The fourth is the same reason as the third: if environemnt conditions affected the flower, all three plants would change color since they were all grown in the same environemnt, not just the one we see in the results.

Some significant floricultural species can now produce flowers with attractive and unique bloom hues thanks to recent advancements in genetic alteration techniques. Thus, option B is correct.

What are the genetic factor in developing organism?

Flower color is governed by two primary gene families. Genes that code for the protein machinery needed to create pigment molecules are part of one category.

The second group includes genes that result in the production of regulatory proteins. The location, quantity, and kind of machinery that makes up the pigments are determined by regulatory proteins.

Flowers have genes that determine how they look, just like humans. These plants “give birth” to pigments, which result in a rainbow of hues.

The carotenoid substance that gives tomatoes and carrots their color also gives some flowers their yellow, red, or orange hue.

Therefore, Genetic factors caused the differences in flower color.

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1. Choose the correct answer.
_____ are stronger at the epicenter of an earthquake.
A) Lava flows
B) Continent currents
C) Hot spots
D) Seismic waves

Answers

Answer: I think the answer is d sorry if its wrong.

Explanation:

D I think good luck <3

What would happen if cytokinesis failed?
The nucleus would never divide, and the new daughter cells would lack a
nucleus and would die.
The cell would be too big and contain more than one nuclei.
The cell would eventually split on its own.
Organisms would not produce more genetic material for each new
daughter cell.

Answers

Answer:

The nucleus would never divide, and the new daughter cells would lack a

nucleus and would die.

Explanation:

Cytokinesis is an essential process of cell division, part of the cell cycle. If cytokinesis failed, cells wouldn't be able to reproduce.

please help me :(
Which of the following describes the intention of the original farm bill?


to raise the values of agricultural products

to expanding incomes of large private sector firms

to regulate options trading on the financial markets

to reduce commodities prices for consumers

Answers

Answer:

To regulate options trading on the financial markets .

Explanation:

Hope this helps

Answer:

To expanding incomes of large private sector firms.

Explanation:

The farm bill connects the food on our plates, the farmers and ranchers who produce that food, and the natural resources – our soil, air and water – that make growing food possible.

Hope this helps you !!

How much solar radiation is reflected back by clouds?
OA. 5 percent
B.
10 percent
O c.
19 percent
OD.
30 percent
RE

Answers

Answer:

OD 30 percent

Explanation:

About 29 percent of the solar energy that arrives at the top of the atmosphere is reflected back to space by clouds, atmospheric particles, or bright ground surfaces like sea ice and snow.

Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
1. The images below show embryos of different species at different stages of development.
Label the images below with 1-4 from least developed to most developed.
A. 4.
B. 1
C.
3
D. 2
2. Which image above do you think is a human? Explain.
Gizmo Warm-up
ont fambra from

Answers

The answer is a (4) I hope this helps out a bit

Question 8
1 pts
Products produced by photosynthesis are necessary for eukaryotic
organisms to exist. What are these products?


Answers

Answer:

CO2 and carbohydrates

Explanation:

in fungi

3. If you drink a lot of water but do not consume additional solutes, how will the specific gravity of the urine be affected

Answers

Anti Diuretic hormones kicks in

Three plants are grown in the same environmental conditions with equal sunlight, water, and space to grow. One plant grew to have a purple flower while the other two grew white flowers. What is the most likely conclusion that can be made for the change in flower color?(1 point)

Genetic factors caused environmental changes that caused the differences in flower color.
Genetic factors caused environmental changes that caused the differences in flower color.

Genetic factors caused the differences in flower color.
Genetic factors caused the differences in flower color.

Environmental factors caused a genetic mutation that caused the differences in flower color.
Environmental factors caused a genetic mutation that caused the differences in flower color.

Environmental conditions caused the differences in flower color.
Environmental conditions caused the differences in flower color.

Answers

The most likely conclusion that can be made for the change in flower color is that genetic factors caused the differences in flower color.

According to this question, three plants are grown in the same environmental conditions with equal sunlight, water, and space to grow.

However, despite the uniformity in the environmental conditions received by each plant, one plant grew to have a purple flower while the other two grew white flowers.

This difference in flower color is likely caused by the inherent genetic factors of each plant rather than environmental factors because they were treated the same.

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Answer:

Genetic factors caused the differences in flower color.

Explanation:

Answer this question if you know the answer
Do you believe in the sanctity of life? Why/ why not?

Answers

Answer:

Yes

Explanation:

Part of religion

Yes. Because I am an emotional being with a life that I value. What happens to my perceptual and emotional being upon the end of my life is unknowable. I possess empathy and a subsumed theory of mind. I can project my own emotions and desires onto those of other beings. I therefore assume that all emotional beings value their own life as I do my own. Out of my empathy for others and my desire that others will empathize with me, I can value the lives of other emotional beings on their behalf. Because it is impossible to know with any certainty what of my emotional being will survive end of life, I place a very high. Perhaps the highest value on my life and by extension the lives of others. To me it seems that spiritual belief precepts which undermine the singular uniqueness of this life experience through afterlife or reincarnation mythologies those can only undermine and lessen the value i.e. the sanctity of life.

So why the gametes in a single plant are genetically different from each other and also different from the cells in the rest of the plant
Is my answer correct ?

Answers

Explanation:

They have unique combinations of chromosomes

They have unique combinations of chromosomes.

What are gametes?

In organisms that reproduce sexually, a gamete is a haploid cell that unites with another haploid cell during fertilization Gametes, commonly known as sex cells, are an organism's reproductive cells.

A female is any individual that generates the bigger kind of gamete—called an ovum—and a male creates the smaller type—called a sperm—in species that produce two morphologically distinct forms of gametes, and in which each individual produces only one type.

The flagellum, a tail-shaped feature that enables the cell to propel and move, is what makes sperm cells, or spermatozoa, tiny and motile. On the other hand, each egg cell or ovum is sizable and non-motile.

Therefore, They have unique combinations of chromosomes.

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Differences between bacteria and plants

Answers

Answer:

Main Difference – Plant Cell vs Bacterial Cell

Explanation:

The plant cell is a eukaryotic cell whereas the bacterial cell is a prokaryotic cell. The main difference between plant cell and bacterial cell is that plant cell contains membrane-bound organelles whereas bacterial cell lacks membrane-bound organelles.

Answer..

An organism's phenotype is the way its _________ is expressed.

Answers

Genotype. Phenotype is what you physically see, genotype is what the genes code for

D
Question 15
2 pts
When a cross between 2 contrasting parents produces new phenotype, different from
either parents, we can conclude that that there is which of the following?

Answers

When a cross between 2 contrasting parents produces a new phenotype, it is known as incomplete dominance. In diploid (2n) organisms, individuals receive one allele or gene variant from each parent.

Heterozygous individuals carry different alleles for the same gene locus.

Incomplete dominance occurs when both alleles are expressed in heterozygous organisms.

The phenotype in cases of incomplete dominance is a mixture of the phenotype observed in both parents.

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In the ecosystem shown here, what represents a producer?
a tree
agate
a mountain

Answers

Answer: Tree

Explanation: Trees produce sap, nuts and fruits.

Tiny blood vessels called ____ Connects the very small artery branches to very small veins. PLESE HELP FAST

Answers

Answer:

cappilaries

Explanation:

Answer:

Cappilaries

Explanation:

hope it helps :) (i already know it)

Define what are abiotic factors

Answers

they are non living part of an ecosystem.

abiotic factors are the non-living part of an ecosystem that shapes its environment.

for example water, light, etc.

Which of the following are consequences of the Dust Bowl of the 1930s?

I. Banks extended loans to farmers to help rebuild impacted area
II. New policies to prevent the dust bowl from happening again
III. Mass migrations and widespread poverty and lack of food

I only
III only
I and II
II and III

Answers

Answer:

I think it is the first one

Explanation:

I

Why are some atmospheric components like Corbin dioxide methane called greenhouse gasses

Answers

Carbon dioxide molecules in the atmosphere absorb long-wavelength infrared energy (heat) from the Earth and then re-radiate it, some of it back downward. This effectively traps heat around the Earth which is called the “greenhouse effect”

PLZ HURRY
Which of the following is organized into chromosomes (there may be more than one awnser )

Dna

tRNA

mRNA
None

Answers

the anser is dna sorry if it wtong
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