The period during which an excitable membrane cannot respond to further stimulation is the ________ period.

Answers

Answer 1

Answer:

refractory period

Explanation:

refractory period is a period of time during which an organ or cell is incapable of repeating a particular action


Related Questions

what is vascular tissue​

Answers

what is vascular tissue??

plant tissue concerned mainly with conduction especially : the specialized tissue of higher plants consisting essentially of phloem and xylem.

hope it helps

"Tall" "purple" and "wrinkled" are examples of?

Answers

Phenotype if genetics is the area

Tall purple and wrinkled are the examples of Phenotypes.

What are phenotypes?

The phenotype is the set of observable characteristics or traits of an organism. The term covers the organism's morphology or physical form and structure, its developmental processes, its biochemical and physiological properties, its behavior, and the products of behavior.

Moreover, the observable characteristics in an individual resulting from the expression of genes; the clinical presentation of an individual with a particular genotype.

Therefore, phenotype examples include earwax type, height, blood type, eye color, freckles, and hair color.

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Pls help I'll mark brainliest

Answers

Answer:

1. Carbon dioxide

2. Water

3. Glucose

4. Oxygen

5. reactants

6. products

7. carbon dioxide

8. oxygen

9. glucose

10. water

11. chloroplast

12. chlorophyll

Explanation:

Answer:

Explanation:

glucose + oxygen        carbon dioxide + water

5. reactants                      6. products

A study is conducted to evaluate the effect of competition between foxes and coyotes for a limited food source. Which level of ecology is being studied

Answers

Answer:

Community ecology!

Explanation:

I’m just did this assignment and got it right <3

A study is conducted to evaluate the effect of competition between foxes and coyotes for a limited food source. The level of ecology being studied is community ecology. The correct option is d.

What is community ecology?

The ecosystem is the fundamental unit for maintaining life, although it extends beyond species living in a single location. The recycling of resources between organisms and their environments, between organic and inorganic forms, is essential to life.

Community ecology is the study of the structure and function of communities, which are assemblages of interacting populations of species living in a certain area or habitat.

A community in ecology is a group or association of populations of two or more different species that live in the same geographical area and at the same time, also known as a biogenesis.

Therefore, the correct option is d, community ecology.

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The question is incomplete. Your most probably complete question is given below:

molecular ecology

organismal ecology

population ecology

community ecology

Which of the following is associated with plates moving away from each other? a. Rifts b. Subduction zones c. Faults d. All of the above.

Answers

Answer:

a. Rifts

Explanation:

A fault (c) happens at all plate boundaries, so while this is true, it is not the most correct. A subudction zone (b) is where Earth's tectonic plates dive down into the mantle, so this does not answer our question. A rift, in general, is a crack, split, or break in something. A rift in plate tectonics is when plates are moving apart from each other, caused be tension, so a is our answer.

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

Answer:

A

Explanation:

the answer is A

Mr. Allen wanted to fill balloons for a party. He rented a helium tank that contained 0.4 cubic meters of helium gas. He was concerned that the gas would not fill many balloons, but it filled 27 large balloons! Why was the small tank of helium gas able to fill so many balloons?

A. Helium mixed with air when it came out of the tank.
B. The helium expanded to fill its new containers, the balloons.
C. Helium molecules are very small in size.
D. The volume of gas in the balloons equaled the volume of gas in the tank.

Answers

Given what we know about the behavior of gases like helium, we can confirm that the small tank of helium was able to fill so many balloons because the helium expanded to fill its new container, which is the balloon.

Helium is a chemical element known as a noble gas. Like all other elements in a gaseous state, the atoms that comprise helium are spaced apart. This allows the gas to be compressed, a property that manufacturers of the gas take advantage of since they can compress a large amount of gas into a small container.

This is precisely what is happening in the question. The small tank of helium, despite being small in size, contains a large amount of compressed helium gas. Therefore, once it is released from the container, the gas expands to fill its new container, which in this case is the balloons, because of this, a relatively small tank of helium was able to fill many large balloons.

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which is not true about a wave in open
Ocen?
A. the wave form noves forward, but
the water particles do not advance appreciably
B. As the wave travles, water particles pass
the energy asong by moving in a circle.
C. water particles move in a circular Path
D. water particles travel with the wave

Answers

d because the water particals travel w the waves

Answer:

D. water particles travel with the wave

Explanation:

The water particles travel with the wave is false about a wave in open Ocean. It gets scattered when passing through it.

What evidence of climate change on continents supports the theory of continental drift?

signs that glaciers existed in South Africa
similar coal fields on different continents
change in atmospheric temperature over time
same animal fossils found on different continents

Answers

Answer:

A

Explanation:

Edge2022

The evidence of climate change on continents that supports the theory of continental drift is similar coal fields on different continents. Hence option B is correct.

What is continental drift theory?

The theory of continental drift suggests that the Earth's continents were once joined together in a single landmass called Pangaea, which began to break apart around 200 million years ago.

This idea was first proposed by German scientist Alfred Wegener in the early 20th century, who noticed the striking similarities between the coastlines of Africa and South America.

Coal is formed from the remains of plants that lived millions of years ago, and its distribution can provide clues about how continents were once connected.

Coal fields found on different continents that match in age and composition indicate that the continents were once joined together in a larger landmass.

This supports the theory of continental drift, which states that the continents were once part of a single supercontinent that later broke apart and drifted into their present positions.

This evidence suggests that coal-forming swamps once existed in locations that are now separated by oceans and that these locations were once connected.

Hence option B similar coal fields on different continents is correct.

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Use the F=ma triangle to determine the mass of an object accelerating at a rate of 10m/s2 due to a force of 60N that was applied to that object.

Answers

Answer:

6

Explanation:

For this question it just takes a little bit of simple algebra. F=MA is an equation that will pop up again if you continue with an interest in science. F=MA actually say force=mass(acceleration). Which then is changed for this problem to M=F/A.

60/10=6

in classical conditioning, stimulus generalization occurs when an organism responds

Answers

Answer: In stimulus generalization, an organism responds to new stimuli that are similar to the original conditioned stimulus. For example, a dog barks when the doorbell rings. He then barks when the oven timer dings because it sounds very similar to the doorbell

PLEASE HELP FAST
LOTS OF POINTS
BEST ANSWER WILL BE MARKED BRAINLIEST!!!!! Thank you!!

The energy released from the complete oxidation of glucose under standard conditions is 686 kcal/mol. The energy
released from the hydrolysis of ATP to ADP and inorganic phosphate under standard conditions is 7.3 kcal/mol.
Using the equation for cellular respiration from question 1, calculate the efficiency of total ATP production from 1
mole of glucose in the organism.

Answers

The energy is 8 so this would be correct answer

how is glaciers melting in alaska a problem for humans

Answers

Answer:

The water will rise

Explanation:

We can drown

How does a frog survive in water as well as on land?

Answers

An amphibian can live both on land and in water. ... Instead of drinking water, frogs soak the moisture into their body through their skin. Frogs breathe through their nostrils while also absorbing about half the air they need through their skin.

Hope this helps :) - sorry if I am wrong - if I am right can I get brainliest please??

NEED URGENT HELP!

A. What are three things that can create microclimates?

B. What characteristics of these things help create a microclimate?

Answers

Topography (height), large bodies of water and urban areas can create microclimates

in a hot place, if theres a mountain there, the top of the mountain can be cold

cement in an urban area can absorb a lot of heat during the day and then release it at night

valleys can have cold air

which molecule is most likely to diffuse through a cell membrane without the use of energy?

Answers

i believe the answer is water

A(n) is a protein and/or sugar molecule on the surface of a cell that allows the immune system to identify whether or not that cell poses a threat.

Answers

Answer:

Antigen

Explanation:


12. ATP will be used during ____ ____
as energy source to produce sugar.

Answers

Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body’s cell.

where are your adrenal glands located in your body

Answers

on top of both kidneys !

While eating dinner, Isabelle starts choking on a grape. She can't cough, talk, or breathe. What should her mother do to help her?

*Heimlich maneuver
(or buy a LifeVac device to keep in your car for emergencies)

Answers

Answer:

c. Do the Heimlich maneuver.

Explanation: is correct. post protected

two other components of blood

Answers

It has four main components: plasma, red blood cells, white blood cells, and platelets. Blood has many different functions, including: transporting oxygen and nutrients to the lungs and tissues. forming blood clots to prevent excess blood loss.

What is the primary function of the
skeletal system?
A. Providing shape and support
B. Removing waste from the
body
C. Circulating blood throughout
the body
D. Producing offspring

Answers

Answer:

The primary function of the skeletal system is by (A) Providing shape and support.

I hope this helped at all.

A bcuz B us for respiratory system and C is for circulatory system and D has nothing to do with skeletal system so the only choice we have left is A

visceral reflex arcs differ from somatic in that ________.

Answers

Explanation:

somatic reflex occurs in skeletal muscles whereas, the visceral reflex occurs in soft tissue organs.

The difference between visceral reflex arcs and somatic reflex arcs is that visceral turns require two motor neurons.

What are visceral reflex arcs?

For instance, somatic reflexes require a direct link between the skeletal muscle and the ventral horn of the spinal cord. The central neuron of a visceral reflex sends a signal to a ganglion, which then sends another signal to the target effector.

While somatic reflexes are aware, visceral reflexes are unconscious. Compared to somatic reflexes, visceral reflexes entail a somewhat slower reaction time.

Visceral reflex arcs use two motor neurons along with glandular tissue and non-skeletal muscle to carry out a reflexive reaction. Skeletal muscles only have one motor neuron, therefore somatic reflex arcs include them.

Therefore, two motor neurons are involved in visceral arcs, which differ from somatic.

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16. Which organelle may have allowed early eukaryotes to make food and produce oxygen? (a) the Golgi apparatus (b) the central vacuole (c) the plastids

Answers

Answer:

the plastids

Explanation:

Answer:  

The plastids are the organelles that compose the cells of plants and algae. These contain chloroplasts, which allow them to capture energy from sunlight. If they are ever removed, these cells will eventually lose their ability to photosynthesize food without help from another organism - they have lost an essential organelle. Without the presence of this organelle, eukaryotes may not have been able to use sunlight as a mechanism for producing oxygen or making nutrients such as glucose available for consumption.

The organelle that may have allowed early eukaryotes to make food and produce oxygen is the plastid. The correct option is c.

What is plastid?

The organelles that make up the cells of plants and algae are called plastids. These have chloroplasts, which enable them to absorb solar energy. These frequently include several kinds of pigments that can alter the color of the cell as well as pigments that are employed in photosynthesis.

These cells will eventually lose their capacity to photosynthesize food without the assistance of another creature if they are ever taken out since they have lost an important organelle.

Eukaryotes might not have been able to exploit sunlight to produce oxygen or make nutrients like glucose available for consumption without the presence of this organelle.

Therefore, the correct option is (c) the plastids.

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All members of a species living in the same location are called a


population


genus


community


ecosystem

Answers

Answer:

population is the best answer

Particulate matter released during manufacturing that does not change form in the atmosphere is considered to be

primary pollutants from a stationary source
primary pollutants from a mobile source
secondary pollutants from a stationary source
secondary pollutants from a mobile source

Answers

Answer:

I think A, "Primary pollutants from a stationary source"

Explanation:

Got it right on exam :)

Particulate matter is defined as material emitted during manufacturing that does not change form in the atmosphere and is a primary pollutant from a stationary source. The correct option is a.

What is particulate matter?

One of the least evident types of pollution is particulate particles. NOT the case for pollution from particle matter. Particle pollution, commonly known as particulate matter (PM), is a type of air pollution made up of microscopic fragments of solids or liquids.

Dust is one possible type of these specks. Dirt. Soot. Particulate pollution can exacerbate acid rain while also altering weather patterns, causing drought, accelerating global warming, and causing the ocean to become more acidic.

Therefore, the correct option is a. primary pollutants from a stationary source.

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the nucleus of the sieve tube of the plant phloem is lost​

Answers

Answer:

The sieve tubes of the phloem in angiosperms consist of sieve tube elements or members. These are cells which lose their nucleus, ribosomes, and vacuoles at maturity. They of course have cytoplasm, and it is connected by channels to companion cells (which do have these organelles).

Explanation:

this is the correct answer

Special proteins that bind to enzymes during the cell cycle are called
a.CDK
b.Growth promoting factor
c.Cyclin
d.checkpoint

Answers

Answer:

cyclins and cyclin-dependent kinases (Cdks), are

Explanation:

I'm sorry if I'm wrong! :{

movement of xylem sap from roots to leaves __________.

Answers

Answer:

trandpiration

Explanation:

(i think)

when was the last time that you had your vital signs taken ?how was the result?​

Answers

Answer:

Normal vital sign ranges for the average healthy adult while resting are: Blood pressure: 90/60 mm Hg to 120/80 mm Hg. Breathing: 12 to 18 breaths per minute. Pulse: 60 to 100 beats per minute.Vital signs are measurements of the body's most basic functions. The 4 main vital signs routinely checked by healthcare providers include: Body temperature. Pulse rate.Checking vital signs is an important skill to learn, because it tells us how the person's body is functioning, helping us to monitor current conditions and alerting us to changes in health status. It can also give us clues to possible medical conditions that have yet to be diagnosed.

how is the structure of a leaf optimized for photosynthesis

Answers

Answer:

- The upper epidermis of the leaf is transparent, allowing light to enter

- They have a large surface area to volume ratio, allowing more light to enter

The upper epidermis of the leaf is transparent, allowing light to enter and they have a large surface area to volume ratio, allowing more light to enter.

What is responsible for photosynthesis to occur?

The mesophyll cell is responsible for photosynthesis occurs. The majority of the chloroplasts and the primary site of photosynthesis are located in the palisade layer. The area of storage and gas exchange is the airy, spongy layer. The stomata control the water and carbon dioxide equilibrium.

For gaseous exchange and photosynthesis, leaves are suited. Since they have a wide surface area and stomata, which enable carbon dioxide to enter the leaf and oxygen to exit, they are well-equipped for photosynthesis.

Chloroplasts, which is known as the house the chlorophyll in plants, are where photosynthesis occurs. The thylakoid membrane, a third inner membrane that creates lengthy folds inside the chloroplast and is bordered by a double membrane, is present inside chloroplasts.

Therefore, The upper epidermis of the leaf is transparent, allowing light to enter and they have a large surface area to volume ratio, allowing more light to enter.

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Other Questions
please help! i dont understand! What is a thesis statement The marginal product of labor is the a. value marginal product of labor multiplied by the price of the good produced. b. total output of labor divided by the quantity of labor used. c. additional output resulting from employing one additional unit of labor. d. same as the marginal revenue product of labor in price-taker markets. Amrit's income is 32% more than Bethan's income.Amrit and Bethan's combined income is 54868.Calculate Amrit's income. Article I, Section 9 of the U.S. Constitution lists these types of powers that Congress does NOT possess. Short definition of inclined plane how has service flag changed over time? Select the correct answer.Read this excerpt from House Decoration by Oscar Wilde:In these days, we hear ladies boast that they do not wear a dress more than once. In the old days, when dresses were decorated with beautiful designs and worked with exquisite embroidery, ladies rather took a pride in bringing out the garment, wearing it many times, and handing it down to their daughters. This process would, I think, be quite appreciated by a modern husband when called upon to pay his wifes bills.Which sentence correctly paraphrases and cites the excerpt?A. Modern husbands who are called upon to pay their wives bills are not happy that their dresses are decorated with beautiful designs and worked with exquisite embroidery (Wilde).B. Fashion was less expensive and more beautiful when women enjoyed wearing a few well-made dresses regularly rather than striving to wear a great variety of clothes (Wilde).C. It is better for women to have many dresses that they only wear once than for women to have a few dresses that they have to hand down to their daughters in order to save money (Wilde).D. In the old days, when dresses were decorated with beautiful designs and worked with exquisite embroidery, ladies rather took a pride in bringing out the garment, wearing it many times, and handing it down to their daughters (Wilde). Why do you think the older scientist disregarded the younger scientist's prediction? Which exercise's can increase your heart rate. How is the principle of popular sovereignty related to the principles of a republican form of government and limited government ? Read the introduction and first paragraph of an essay about energy sources.(1) The nation's energy use is largely dependent on fossil fuels. (2) These fuels are nonrenewable resources, and they cause pollution. (3) We cannot continue our reliance on a fuel that will eventually run out. (4) Thus, we must find other ways to sustain our energy demands. (5) Pursuing alternative fuel sources is the key to solving our energy crisis.(6) Currently, about 1 percent of energy in the United States is produced by the sun, and solar energy has the potential to become a more widely used energy source. (7) Through different technologies, such as solar cells, scientists have learned to use the suns radiation to create electricity. (8) Solar energy is both inexhaustible and clean. (9) The major limit to this alternative source is that equipment is expensive. (10) Developing a cost-effective way to harness the power of the sun will be a significant development in solving our energy crisis. Which statement introduces a new counterclaim to the authors position?Batteries are being developed to harness the sun's power for use at a later time.The production of solar energy is relatively quiet, reducing noise pollution.Solar panels can be placed in remote areas, which is more cost effective than installing high-voltage wires.The use of solar energy is especially limited in areas that do not get regular sunlight. Which statement best explains Walt's motivation for trying to get to Dawson before the stampeders? ERead the introduction and first paragraph of an essay about energy sources.Abc(1) The nation's energy use is largely dependent on fossil fuels. (2) These fuels are nonrenewableresources, and they cause pollution. (3) We cannot continue our reliance on a fuel that will eventually runout. (4) Thus, we must find other ways to sustain our energy demands. (5) Pursuing alternative fuel sourcesis the key to solving our energy crisis.(6) Currently, about 1 percent of energy in the United States is produced by the sun, and solar energy hasthe potential to become a more widely used energy source. (7) Through different technologies, such assolar cells, scientists have learned to use the sun's radiation to create electricity. (8) Solar energy is bothinexhaustible and clean. (9) The major limit to this alternative source is that equipment is expensive. (10)Developing a cost-effective way to harness the power of the sun will be a significant development insolving our energy crisis.Which is an alternative piece of evidence that supports the idea that solar energy could play a part in solving theenergy crisis?Solar energy is not a suitable solution for all climates due to shorter hours of daylightMark this and return Which of the following best describes the solution to the equation below? 8x + 4 = 8x + 4 I WILL GIVE BRAINLIEST!!!!Answer these 4 questions using the piece of art and the artist.Piece of art: GlennArtist: Jean-Michael Basquiat1 - What elements of art are used? 2 - What is the medium?3 - What is the subject?4 - What would you take away from this work to incorporate into your own art? a population of deer is increasing at a rate of 12% per year, if this rate of growth remains the same, and the population starts out with 250 deer approximately how many deer will there be in 5 years? My ears have not yet drunk a hundred wordsOf that tongue's utterance, yet I know the sound:Art thou not Romeo and a Montague?What type of figurative language is this? Perform the indicated operation.-274 -9I need help notah decides to buy a new phone.He pays $ up front and then will pay the same amount each month for 8 months.The total cost of the phone is $600.How much will Notah pay each month?