When the stimulus voltage is increased, _______. When the stimulus voltage is increased, _______. sodium permeability into the cell decreases sodium permeability into the cell increases to overcome the potassium exiting a greater-than-threshold depolarization results a greater-than-threshold depolarization results and sodium permeability into the cell increases to overcome the potassium exiting.

Answers

Answer 1

Answer:

a greater-than-threshold depolarization results and sodium permeability into the cell increases to overcome the potassium exiting.

Explanation:

The occurrence of action potential requires the existence of active voltage-dependent channels to open and close in response to the membrane depolarization.  

When depolarization reaches and supers the threshold point, voltage-dependent Na+ channels open and the ion gets into the cell. The entrance of Na+ decreases the electric charge difference between the cellular interior and exterior. Membrane depolarizes and produces the action potential that tends to reach a potential equilibrium for Na+ = +60mV. The higher the Na+ input is, the greater is the depolarization and the greater is the Na+ permeability.

Once Na+ channels are closed, voltage-dependent K+ channels open, increasing the membrane permeability to the ion, letting K+ get out of the cell, following the electrochemical gradient.  

The closure of Na+ channels and opening of K+ channels are responsible for membrane repolarization.


Related Questions

3characteristics of good respiratory surface​

Answers

thin walls.

a moist inner surface.

a huge combined surface area.

18. Which of the following is not an environmental consequence of aquaculture? (1 point)
It releases wastewater into natural environments.
It breeds diseases that devastate fish populations.
It introduces invasive species to natural ecosystems.
It causes wild fish populations to become too large.
It encourages overfishing of wild fish used to feed farmed fish.

Answers

It introduces invasive species to natural ecosystems

DNA is often compared to a twisted ladder. In this analogy, what forms the
rungs of the DNA ladder?
A. Pairs of nitrogenous bases
B. Pairs of nucleotides
C. Pairs of sugars
D. Pairs of phosphate groups

Answers

A- on the sides you would find the phosphate and sugar so the center is the AT or CG

The pairs of nucleotides result in the twisting of strands. Therefore, option "B" is correct.

What is nucleotide base pairing?

There are five types of nucleotide bases adenine, cytosine, guanine, thymidine, and uracil. These divide into two classes of nucleotides pyrimidine and purine nucleotide bases.  Pyrimidines are uracil, thymine, and cytosine whereas adenine and guanine are purine.

In RNA, adenine, cytosine, and guanine are present but thymine is replaced by uracil. Pyrimidine always binds with the purines through hydrogen bonding. Adenine binds with thymine. Cytosine binds with guanine. But when adenine pairs with uracil in RNA.

Therefore, nucleotide base pairing determines the twisting of the DNA strand depending on the type of nucleotide present.

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What are the five fields of plant biology?
Please explain your answer !!
Thank you!

Answers

Answer:

Plant biochemistry.

Plant ecology.

Plant evolution.

Plant physiology.

Plant anatomy and morphology

How do u tell if a rat snake is a female or male

Answers

Answer:

Well Males have longer tails than females do.

Explanation:

Answer:

well thanks for the point

Which is an important source of carbon monoxide emissions that contributes to the greenhouse effect?


landfills


wetlands


vehicles


greenhouses

Answers

It is vehicle.
Explanation- I don’t know lol
It’s the vehicles because of the gas in the air and when the car is moving smoke and then it can cause pollution to the air and it would be bad

what is one way the gas giants differ from the terrestrial planets

Answers

Question

what is one way the gas giants differ from the terrestrial planets?

ANSWER

Planets that are largely comprised of rock, such as rocky or terrestrial planets, are not like gas giants. Unlike rocky planets, gas giants lack a clearly defined surface there is no obvious line separating the atmosphere from the surface. The atmospheres of the gas giants are primarily hydrogen and helium.

--------------------------hope this helps...have a great day!!

1.3 Genes and Chromosomes.
___ are sections of ___ that code for the production of DNA code.

Answers

Answer:

Genes and DNA

Explanation:

The table lists some organelles and functions. Only one pair is correctly matched.

Functions of Organelles
Organelle Function
Nucleus Directs cell activity
Endoplasmic reticulum Breaks down sugar molecules to supply energy
Golgi apparatus Supports and protects organelles in the cell
Lysosome Produces proteins for the cell

Which organelle in the table is correctly matched with its function?

Answers

Answer:

I believe the correct answer is nucleus.

Neither endosomes nor lysosomes are found in the nucleus. The nucleus serves as the primary remote control for the cell. It acts as the cell's brain by giving instructions on what to do, how to grow, and when to reproduce.

What is the cell controlling power of nucleus?

The nucleus serves as the primary remote control for the cell. It acts as the cell's brain by giving instructions on what to do, how to grow, and when to reproduce. The nucleus of the cell contains the cell's genes.

The nucleus is the area of the cell that manages all of its operations. The nucleus is a membrane-bound, spherical organelle.

Its membrane, known as the nuclear membrane, has nuclear pores that control how materials are transported into and out of the cell. The nucleus' ability to store DNA is its primary role.

Therefore, Nucleus organelle in the table is correctly matched with its function.

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Submit te
4
Next →
Cell Processes and Transport: Mastery Test
4
Select the correct answer from each drop-down menu.
Sodium and potassium lons are essential for muscle contractions of the heart. The ions are transported using a pump, which obtains
energy by the breaking of
. This action requires the expense of energy. So, sodium and potassium ions are transported using
Reset
Next

Answers

Answer:

Cell

Explanation:

Sodium and potassium ions are essential for muscle contractions of the heart, and the ions are transported using a pump, which obtains energy from the breaking of ATP molecules, this action requires the expenditure of energy, so sodium and potassium ions are transported using active transport.

What is muscle contraction?

Sodium and potassium ions play a crucial role in muscle contractions, including those of the heart, and to maintain the appropriate concentration of these ions inside and outside the cell, the body uses a protein pump called the sodium-potassium pump, which is an active pump. It requires energy to move substances across cell membranes; the pump uses the energy released by the breakdown of ATP molecules to change its shape, transport the sodium and potassium ions across the membrane, and regulate the muscle contraction.

Hence, the ions are transported using a pump, which obtains energy from the breaking of ATP molecules, this action requires the expenditure of energy, so sodium and potassium ions are transported using active transport.

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question is incomplete, complete question is below

Select the correct answer from each drop-down menu.

Sodium and potassium ions are essential for muscle contractions of the heart. The ions are transported using a pump, which obtains energy by the breaking of ----. This action requires the expense of energy. So, sodium and potassium ions are transported using---

ATP,

active transport.

Define the term:
1.Respiration
2.Transportation ​

Answers

Answer:

1 respiration the chemical process whereby energy rich molecules, example glucose,is chemically broken down to release energy.

Answer:

breathing in and out

Explanation:

the action or process of inhaling and exhaling breathing

movement of humans,animals and goods from one location to another

*PLEASE ANSWER IM BEING TIMED!!*
Most ecosystems tend to be complex because

they are found in all climates.

potential competitors in the ecosystem often occupy slightly different niches.

they all contain a wide variety of producers.

of symbiotic relationships within them.

Answers

Answer:

the most likely answer is option 3

they all contain a wide variety of producers

what is the meaning of respiration​

Answers

Answer:

in physiology respiration is the movement of oxygen from the outside environment to the cells with tissues and the removal of carbon dioxide in the opposite direction .. in contrast exhalation is usually a passive process

hope it's helpful

Answer:

The process of breathing.

Explanation:

The lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out (called expiration, or exhalation). This exchange of oxygen and carbon dioxide is called respiration.

**Physiological respiration and cellular respiration are not the same. People sometimes use the word "respiration" to refer to the process of cellular respiration, which is a cellular process in which carbohydrates are converted into energy. The two are related processes, but they are not the same.

Synthetic fiber has many characteristics that makes it more attractive than natural fiber for making clothing. Which of the following choices are true

1. Synthetic fiber has greater shape retention

2. Synthetic fiber often costs less

3. ALL options are correct

4. Synthetic fiber has greater durability

5. Synthetic fiber is more prone to heat damage in the wash than natural fibers

Answers

Answer:

C

Explanation:

Answer:

C

Explanation:

If the PH or the temperate where the enzyme is located changes, the enzyme is very likely to
denature (become inactive/ stop working)
True
False

Answers

Answer:

very true

Explanation:

they dont like change:)

Enzymes are proteins that help speed up metabolism, or the chemical reactions in our bodies.

If the PH or the temperate where the enzyme is located changes, the enzyme is very likely to denature is a true statement.

What are enzymes?

The enzymes show the best activity at optimum temperature and pH. When there is a change in the temperature, the structure of the enzyme is changed.Any change in the temperature or pH will result in the breaking of the peptides or disulfide bonds. This will disturb the tertiary structure of the enzyme. At the lower temperature, the enzymes get deactivated while, at a higher temperature, it gets denatured.

Thus, we can conclude that the correct option is True.

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PLEASE HELP ITS DUE TOMORROW
based on Mr. Kaku's assertion that knowing what the stars are made of is as easy as running starlight through a prism, use the CER method to explain the use of light to determine composition of a star in detail.

Answers

Answer:

good luck on that one... ........... ..

Please help I’ll give brainliest

Answers

Answer:

53

Explanation: You do 36 + 17 = 53 neutrons

Answer: The answer is 19

Complete the following sentence.
__________ is the science and practice of growing gardens.

Answers

Answer:

Horticulture is the science and practice of growing gardens.

Explanation:

4. Refer to the image below. Which statement is FALSE? *
O Option 1: ATP isn't used in this process.
Option 2: This process is an example of passive transport.
O
Option 3: Molecules move from an area of high concentration to an area of low
concentration.
O Option"4: This process occurs across the cell membrane.
O Option 5: ATP is used in this process.

Answers

Molecules move from an area of high concentration to an area of low concentration is F A L S E .

Which conclusion is best supported by his observations?

Answers

Answer:  

The answer would be d finch 4 is adapted to eat small insects that live in tiny holes.

Explanation:

help pls *serious ppl only*

Answers

Answer:

6 for white parents, and 6 for black parents.

5. How are populations, ecosystems, and communities related? (1 point)
O A community consists of an ecosystem and its physical environment, and an ecosystem is made up of
many different populations of organisms.
O A population consists of a community of organisms and its physical environment, and a community is
made up of many different ecosystems.
O An ecosystem consists of a community of organisms and its physical environment, and a community is
made up of many different populations of organisms.
O An ecosystem consists of a population of organisms and its physical environment, and a population is
made up of many different communities of organisms.

Answers

Answer:

an ecosystem consists of a population of organism and it's physical environment,and a population is made up many different communities of organism.

PLEASE HELP!!!
24) is it possible to know the genotypes of the three children in generation 111?
should their shapes be shaded? explain your answer to both questions.

Answers

Answer:

The genotype of all children in generation III is Hh. as H comes from dad and h comes from the mother for every case.

yes, their figures should be shaded.

reason :-

The dominant allele Fort this disease is shown by H whereas the recessive trait shown by h.

each offspring in generation III has the genotype Hh

and the presence of one dominant allele is enough to cause the disease.

all children in generation 3 suffer from the disease and so their figures should be shaded

I am sorry I just need points I am sorry

Help asap please! On 7 and 8

Answers

Answer:

7 is 3' AUC 5'

8 is 3' AUC 5'

Explanation:

remember in mrna the complementary base pair are adenine with Uracil and guanine with cytosine. you can also remember them as Apple Under and Car Garage.

Which is an endocrine function?

Answers

Answer:

Explanation:

The endocrine system is a messenger system comprising feedback loops of the hormones released by internal glands of an organism directly into the circulatory system, regulating distant target organs. In vertebrates, the hypothalamus is the neural control center for all endocrine systems. In humans, the major endocrine glands are the thyroid gland and the adrenal glands. The study of the endocrine system and its disorders is known as endocrinology.

Write about the structure and the purpose of Fat or Lipids.

Answers

Answer:

A lipid is any of various organic compounds that are insoluble in water. They include fats, waxes, oils, hormones, and certain components of membranes and function as energy-storage molecules and chemical messengers.

Can you help me, please?

Answers

The answer which you selected "transcription and translation" is correct

Why do you think species are endangered? Name some root cause of the problem.
How do you think this situation can be realistically improved?

Answers

Global warming from human activity. Mainly the burning of fossil fuels. There are many solutions that are already available. Such as solar, wind, and geothermal energy. The issue is that these solutions also have problems and are expensive. Likely a combination of them and the engineering of ways to safeguard pollutants so they don’t make it into the ecosystem will be the best way that this will improve.

Think of an organism you've heard of or read about that has a surprisingly unusual trait or behavior. How is this trait or behavior different from similar organisms? How does it help the organism survive in its environment?

Answers

Answer: The organism with an unusual behaviour that I have read of is the CHAMELEON

Explanation:

Behaviour is everything an organism does in response to changes in its environment. It is basically adaptive, geared mainly to promoting the organism's survival and reproduction. Generally, we associate behavioural adaptations with animals since most behaviour patterns involve movements of various body parts and locomotion. Animals exhibit a variety of behaviour patterns with respect to

--> obtaining food,

--> escape and defence,

-->surviving unfavorable conditions,

--> communication,

--> finding mates and

--> caring for the young.

The CHAMELEON is famous for its rapid colour changes as it moves from a background of one colour to another. It is DIFFERENT from other similar organisms because it can display a variety of coloured patterns to blend with its background.

The colour change exhibited by the chameleons helps the organism to obtain food and survive in its environment. The CHAMELEON simply sits still, unnoticed and when an unsuspecting insect flies by, it flicks out its tongue to catch it.

Answer:

I have heard that black bears are almost entirely vegetarian while many other bears including polar bears are carnivorous. The black is not actually considered friendly but studies have shown that compared to other animals it is quite nice. Studies have shown that the black bear is omnivorous but that it rarely and I mean rarely eats meat. This trait is different from similar species such as polar bears that eat mainly bearded seals. But maybe if they lived in a place that actually grew plants or other vegetarian things maybe it could have also been a vegetarian or even omnivores. The black bear is also considered “nice” researchers have said that when they studied black bears that they aren’t the meanest animals around which I guess is a plus. The black bears mainly live in forests or even sometimes alpines. So being omnivorous or mostly vegetarian may help the organism survive in its environment because there are a lot of plants and other greens that it can eat around the area it stays in. As well as, when it is in the alpines there may be little to no greens so it will resort to meat or fish because it has to feed its cubs or because it is simply just hungry.

Explanation:

what you mean by accessory pigments? ​

Answers

Accessory pigments are compounds that absorbs light. They are found in photosynthetic organisms.
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Do you think the farmers had problems with industrialization (factories, machines)? Why or Why not? RT = 29, RS = 2x + 1, ST = 6x + 4. What is the length of RS? Humans depend on water from various sources for different reasons. All of these sources are polluted or could be polluted to some extent. Of the following sources, which should humans be most concerned about: lakes, rivers and streams, ocean or groundwater? Explain. answer it no link please anser it a soon as possible pleaseeeeee answer it pleaseee :) Write a recursive method that receives a string as a parameter and recursively capitalizes each character in the string (change a small cap to a large cap, e.g. a to A, b to B, etc) as following: capitalize the first letter from the string, then calls the function recursively for the remainder of the string and in the end, build the capitalized string. For example, for "java", will capitalize the first letter to "J"(base case), calls the method recursively for the reminder of the string "ava" (reduction), and after recursion/reduction is over it and returns "AVA" will build a new string from "J" and "AVA" and return "JAVA" to the calling method.Write this algorithms in java source code plz. Convert each of the following estimates of useful life to a straight-line depreciation rate, stated as a percentage, assuming that the residual value of the fixed asset is to be ignored: (a) 4 years, (b) 8 years, (c) 10 years, (d) 16 years, (e) 25 years, (f) 40 years, (g) 50 years. If required, round your answers to two decimal places. Answer the following What are your concerns while preparing for an interview? ________ de Mara son rojos. Los dedos Los hombros Los labios Los pies Can someone help me? It's urgent and thank you! Which sentence best states the conflict revealed in this passage from HelenKeller's The Story of My Life?Have you ever been at sea in a dense fog, when it seemedas if a tangible white darkness shut you in, and the greatship, tense and anxious, groped her way toward the shorewith plummet and sounding-line, and you waited withbeating heart for something to happen? I was like that shipbefore my education began, only I was without compass orsounding-line, and had no way of knowing how near theharbour was. "Light! give me light!" was the wordless cry ofmy soul, and the light of love shone on me in that veryhour.O A. Helen is angry that her mother and teacher aren't helping her tocommunicate.O B. Helen is sad that her teacher is leaving and will be unable tocommunicate with her.OC. Helen is scared that she will never be able to communicate withher family againO D. Helen is frustrated by the challenges associated with learning tocommunicate. A service provided by a business to the final user is known as:consideration.investments.implied warranty.economic services.capital goods. PLEASE HELP WILL MARK BRANIEST Simply please hurry!! Thank you also please ignore my answer I had to click something Which of the following is an advantage of sexual reproduction?A. The offspring are genetically different to each other and to the parentsB. A lot of time and energy are required for finding matesC. The genetic differences help organisms to adapt to their environment and surviveD. Offspring can be produced more slowly than by asexual reproduction SOMEONE PLEASE HELP ME! I will give brainliest Find the value of x. X + 11 + 8x = 29 (Fill in the blanks) In the years leading up to 1898, the United States mained a strict policy when it came to foreign policy, alliances, and foreign entanglements - a policy of ________________________ (term) in which kept the United States out of global conflicts. This was suggested by President ____________________________ (people) in his farewell address, and further cemented by President ____________ in his statement known as the Monroe Doctrine. In 1898, the United States emerged on the world stage when it entered the _________________________ (term) in Cuba. The participation of the United States in this conflict was caused by many events including _____________________ (term), a tactic used by journalists to sway the American public in favor of war, and by the sinking of the ship ________________ (term) in Havana Harbor. Following American victory in the war, the United States annexed the following colonies from Spain: Puerto Rico, Guam, and the ____________________ (term). The idea of American ________________ (term), or establishing American colonies overseas, was debated in both government and the American public. Senator ___________________________ (people) was strongly against American ___________________ (term). America extended its influence over the Western Hemisphere by building the ______________________ (term) in the early 1900s under President Taft. The project was seen as a major need for the US Navy, and American economy. After the early foreign interventions of the United States, it became clear to President Roosevelt that the Monroe Doctrine had to be amended. As such, he wrote an addition known as the _____________________ (term). This stated that European empires had to restrict their influence in North America, and that the United States had the right to exercise a police power to guarantee peace. This was also called the ______________________ (term) policy.By 1914, the world was at war. European empires were battling across Europe for dominance in colonization and military power. Under the first term of President _________________ (people), the United States maintained neutrality in the war. This changed after a series of events including the sinking of the ship ____________________ (term), and the _______________________ (term), which suggested that Germany and Mexico would form an alliance against the United States. When the United States entered the war, it joined the alliance known as the ________________ (term). The United States had a small military in 1917 when it declared war, and had to hold a ____________ (term) to create an army large and strong enough for war. The war had many effects on the United States many more ________________ (people) had to secure employment in factories. ______________________ (people) migrated to the north and western cities of the United States both for work and to escape racism and Jim Crow laws in the south. Additionally, there became a widespread fear of ____________________ (people) - this movement was known as the ______________ (term). 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