cellular activity across a cell membrane

Answers

Answer 1

Answer:

The plasma membrane is a selectively permeable barrier between the cell and the extracellular environment. Transport of such molecules and ions across all cellular membranes is mediated by transport proteins associated with the underlying bilayer.

Explanation:


Related Questions

How is the age distribution pattern of the Hawaiian Islands - Emperor Seamount chain explained by the position of the Hawaiian hotspot? Explain using evidence and reasoning.

Answers

Answer:

Find the explanation below.

Explanation:

The Hawaiian Islands is a series of islands positioned in what looks like a chain, which increases in age as one moves northwest. The Hawaiian hotspot was formed as a result of the collision of the tectonic plates in the outer part of the earth which caused the rise of a volcano, and which in turn gave off magma which came to rest on a seafloor. That eruption on the seafloor is the hotspot.

This hotspot remains unmovable while the tectonic plates are in constant motion around the hotspot, giving rise to further Islands. This explains the age distribution pattern of the Hawaiian islands which arrived at different times making some older than the others.  

Which of the following best defines a gene pool?

a. the sum of all genetic traits in a population’s individuals at a given time
b. any movement of genes from one population to another
c. any movement of organisms from one environment to another
d. the random change in the frequency of an allele in a population

Answers

The correct answer is : A) The sum of all genetic traits in a population's individuals at a given time.

Answer:

A

Explanation:

Just took the test

I need a Description of the uterus for scientific reasons. But fr pls help me with a description

Answers

The uterus is a hollow muscular organ located in the female pelvis between the bladder and rectum. The ovaries produce the eggs that travel through the fallopian tubes. Once the egg has left the ovary it can be fertilized and implant itself in the lining of the uterus. The main function of the uterus is to nourish the developing fetus prior to birth.

Is that good?

I want to know know know know

what is love ☕

Answers

Answer:

Love = Silence

Explanation:

Because sometime you can't tell someone how you feel so you have to keep your love silenced.

15. Each of the following is a density-dependent limiting factor EXCEPT
A. crowding
B. competition
C. disease
D. seasonal cycles​

Answers

Answer: d, seasonal cycles

Explanation: it doesn't affect the population.

When experiencing oxygen debt, why do human cells not carry out the process of alcoholic fermentation?

Answers

I believe the answer is because oxygen is a fuel/input/reactant to alcoholic fermentation.

which of the following is not an acquired trait of a human​

Answers

Answer:

Acquired traits develop during life (not in your DNA) and answers are below:

Explanation:

Examples:

-Things you learned

(riding a bike, reading, writing, painting, drawing, cooking, school subjects, etc.)

-Things that happened to you

(short hair, broken bone, plastic surgery, dyed hair, etc.)

Hope this helps!

what is the passing of traits from parents to offspring?

Answers

Answer: Heredity

More information about Hereditary:
The characteristics (genotypes and phenotypes) can be predicted by using a Punnet Square.
Parents give off their genetic traits to give genetic traits to the offspring.

I hope this helped! :)

Classify the sets of bones below as being part of the axial skeleton or the appendicular skeleton.


hands and feet

sternum

skull

hips

ribs

shoulders

arms and legs

vertebral column

Answers

Answer:

Hello the correct answers are......

Classify the sets of bones below as being part of the axial skeleton or the appendicular skeleton.

✔ appendicular skeleton = hands and feet

✔ axial skeleton  = sternum

✔ axial skeleton  = skull

✔ appendicular skeleton = hips

✔ axial skeleton = ribs

✔ appendicular skeleton = shoulders

✔ appendicular skeleton  = arms and legs

✔ axial skeleton  = vertebral column

Explanation:

just took the test from edge

hope this helps :P

Hii!! (: The correct answers are:

appendicular skeleton - hands and feet

axial skeleton - sternum

axial skeleton - skull

appendicular skeleton - hips

axial skeleton - ribs

appendicular skeleton - shoulders

appendicular skeleton - arms and legs

axial skeleton - vertebral column

what is the function of RBC

Answers

Answer:

When a red blood cell is placed in a hypertonic solution, it contracts as water is drawn out of the cell and into the surrounding solution. If the same blood cell is placed in a hypotonic solution, the blood cell grows in size. Blood cells in isotonic solutions do not shrink or swell.

The reason that blood cells change in size when placed in a solution with different salt concentration is due to the osmosis process. Osmosis causes solutions with high concentrations of salt to draw water from areas with low concentrations of salt.

There are some exceptions to this phenomenon. Blood cells can draw water and explode when placed in hypertonic solution on some special occasions. Some diseases affect the structural integrity of blood cells. Also, when human blood cells are exposed to temperatures close to freezing, they can draw water and explode.

Osmosis is an important phenomenon for living systems. The amount of salt in a given solution exhibits a tendency to diffuse through the environment, eventually resulting in equilibrium. In addition to blood cells, the kidneys function through the use of osmotic principles. The kidneys filter an animal's blood to remove excess salt and balance the amount of water

Answer:

It carry oxygen from our lungs to the rest of our bodies. they make the return trip, taking carbondioxide back to our lungs to be exhaled

A mixture in which different materials are easily identified is____​

Answers

Answer:

heterogenous mixture

Explanation:

How is the phrase, “you are what you eat,” related to metabolism? Explain what that means.

Answers

Answer:

Because when you metabolize something you adsorb it's nutrients.

Explanation:

Is self-explanatory. Look at the answer...

Over the course of an individual's life, personality is _________
A. remarkably stable in the long term
B. constantly changing between stages
C. impossible to reliably measure
D. capable of both change and stability

Answers

Answer:

On ed2020 its D

Explanation:

In individual's life, personality is capable to change and also being stable over the course of development, hence option d is correct.

What is personality?

At other words, rather than a progressive growth, development happens in different levels. The term "development" has a favorable meaning, its meaning varies depending on how it is used.

Typically, the word "development" indicates growth, it refers to a time when things transform and develop. Additionally, it tends to encourage people to reach their maximum potential.

Therefore, it may also refer to a different interpretation of an earlier occurrence, personality can change or be stable, hence option d is correct.

Learn more about personality, here:

https://brainly.com/question/11732344

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which chemical formula would a drought effect and how?

Answers

Answer:

Drought often reduces the sugar content in lignocellulosic biomass, which could have economic impacts, particularly when compounded with ...Explanation:

how do central nervous system and the peripheral nervous system work together to control the body?

Answers

The central nervous system includes the brain and spinal cord, while the peripheral nervous system includes all of the nerves that branch out from the brain and spinal cord and extend to other parts of the body including muscles and organs. Each part of the system plays a vital role in how information is communicated throughout the body.

The primary role of the PNS is to connect the CNS to the organs, limbs, and skin. These nerves extend from the central nervous system to the outermost areas of the body.

In conjunction with the central nervous system (CNS), the PNS coordinates action and responses by sending signals from one part of the body to another.

The general flow of information is that the peripheral nervous system (PNS) takes in information through sensory neurons, then sends it to the central nervous system (CNS) to be processed. After processing, the CNS “tells” the PNS what to do—what muscles to flex, whether the lungs need more oxygen, which limbs need more blood, any number of biological processes—and the PNS makes it happen through muscle control. The neurons responsible for taking information to the CNS are known as afferent neurons, while the neurons that carry the responses from the CNS to the PNS are known as efferent neurons.

24. What is the total magnification of this compound microscope using the low power objective
lens?

Answers

Answer: The total magnification of a low power objective lens combined with a 10x eyepiece lens is 100x magnification, giving you a closer view of the slide than a scanning objective lens without getting too close for general viewing purposes.

Explanation:

Waves and currents help to
form beaches

Answers

Answer:

ye

Explanation:

please help me, i dont like this

Answers

Answer:

The answer is true

Explanation:

I looked it up.

the answer is true have a great day

Shameeka is studying for an exam. She took the notes below about calcium and chlorine, which are known to form ionic bonds.

Calcium, which is a metal, donates 2 electrons to chlorine.
The individual calcium atoms become ions with a negative 2 charge.
The bond between calcium and chlorine makes the atoms stable.
Calcium and chlorine attract each other.

Which best describes Shameeka’s error?

Calcium is a metal, so it donates protons, not electrons.
The individual calcium atom has a positive, not negative, 2 charge.
The bond formed makes the atoms unstable, not stable.
Calcium and chlorine repel, not attract, each other.

Answers

Answer:

The individual calcium atom has a positive, not negative, 2 charge.

Explanation:

The error in her study is in the second line of her note which suggests that the individual calcium atoms becomes ions with a negative 2 charge.

When atom loses electrons, it has a net positive charge on it. Not a negative charge. This is because the number of protons is now more than electrons. Therefore, a net charge on the calcium atom will be a positive one. This is her mistake.

Answer:

B) The individual calcium atom has a positive, not negative, 2 charge.

Explanation:

Hope this helps. Have a good day!

Which of the following best describes the purpose of cellular reproduction?

A) to synthesize new adequate ATP from ADP
B) to replaces dying cells with new cells
C) to ensure that chromosomes contain enough DNA in the nucleus
D) to provide enough oxygen for cells to function properly

Answers

Answer:

i think b

Explanation:

cellular reproduction is to reproduce a preexisting cell

B, because cell reproduction is just to make new and more cells

Which were the elements to form in the earliest stage of the universe?

A. Lithium, nitrogen, and carbon
B. Hydrogen , helium , and lithium
C. Carbon , oxygen , and hydrogen

Please let me know

Answers

Explanation:

AswerB

hydrogen, helium and lithium

It took 380,000 years for the electrons to be trapped in orbits nuclei forming the first atoms. (which is option B)

Which example best represents the use of materials science in the growth of technology?

Answers

Answer:

I dont see the examples or a picture??

Explanation:

is Organic Really Better? Healthy Food or Trendy Scam?

Answers

Answer:

It is better

Explanation:

It tastes better :)

And it has no pesticides

Answer:

♡ hi darling ♡

- Organic is great. Infact, I actually eat organic food for a living. Even the oreos are good, they taste better and it's better for you tbh. It helps you be more healthier but your still enjoying it because it's not like celery all day or something.

have a great day.

✧・゚: *✧・゚:・゚✧*:・゚✧・゚: *✧・゚:・゚✧*:・゚✧

what significant role does dna play in formation and development of an organism

Answers

Answer:

DNA contains the instructions needed for an organism to develop, survive, and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.

Explanation:

DNA contains the instructions needed for an organism to develop, survive, and reproduce.

What is DNA?

Cells' capacity to store, retrieve, and translate the genetic instructions necessary to create and maintain a live organism is essential to life.

This genetic material is transmitted from one generation of an organism to the next through the reproductive cells of the organism and from one cell to its daughter cells during cell division.

Every living cell contains these instructions as part of its genes, which are the information-containing components that define the traits of a species as a whole and of the individuals within it.

Therefore, DNA contains the instructions needed for an organism to develop, survive, and reproduce.

To learn more about DNA, refer to the link:

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I will really appreciate if you can tell me the answer

Answers

Socratic can help! This learning app, powered by Google AI, helps you understand your school work at a high school and university level. Ask Socratic a question and the app will find the best online resources for you to learn the concepts.

Thank you!

Please give me a brainliest,

Olvin Otero

Match the agency with the type of event over which it takes jurisdiction.

1. Bureau of Land Management
2. Food and Drug Administration
3. United States Department of Agriculture

A wildfire is destroying national forests in California.
A farmer in Kansas wants to obtain energy from a wind farm on federal land.
An outbreak of mad cow disease is reported.

Answers

Answer:

A wildfire is destroying national forests in California.-3

A farmer in Kansas wants to obtain energy from a wind farm on federal land.-1

An outbreak of mad cow disease is reported.-2

Explanation:

Hope this helps <3

~Grey

Answer:

3 A wildfire destroying national forests in California

2 an outbreak of mad cow disease is reported

1 a farmer in Kansas want to obtain energy from a wind farm on federal land

Explanation: I got it right on a quiz that I did in the 11th grade your welcome and plz give me the Brainiest tanks

Many cells make and use an enzyme, called catalase, to facilitate the decomposition of hydrogen peroxide (H2O2). The products of the decomposition are hydrogen (H2) and oxygen (O2). What is the effect of catalase on the decomposition of hydrogen peroxide?

Answers

Answer: Catalytic effect

Explanation:

Catalyst is a substance which speed up the rate of the reaction occurring inside the body.

The catalase is an enzyme which is responsible for catalyzing the decomposition reaction or break down of the hydrogen peroxide. And all living things exhibit or possess this enzyme. The enzyme catalyzes the decomposition of the hydrogen peroxide into water and oxygen.  

What is the correct answer?

Answers

Answer:

i think the answer is it can change the mass of something

Answer:

Yh I was also gonna say dat to

How do I calculate the weight/force?

Answers

Answer:

Weight = Mass X Gravity   w=mg

Explanation:

What is the correct answer?

Answers

Answer:

the cart will move right

EXPLANATIONS

BECAUSE OF MORE FORCE

the cart will move to the RIGHT because there is more FORCE
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