Which of the following best describes how a channel protein moves materials across the membrane? A)They provide a carrier for specific molecules to bind to and cross the membrane via endocytosis. B)They provide a passage for specific molecules to cross the membrane via passive transport. C) They provide a tunnel for solutes to cross the membrane via active transport. D) They provide energy needed for solutes to cross the membrane via facilitated diffusion.

Answers

Answer 1

Answer:

I would like to say A.......

Answer 2
A. From what I remember.

Related Questions

A characteristic common to eukaryotic cells that is not found in prokaryotic cells is the
cell membrane
presence of DNA
use of ribosomes for protein synthesis
presence of mitochondria

Answers

Answer:

Presence of the Mitochondrion!!

Explanation:

~

A characteristic common to eukaryotic cells that are not found in prokaryotic cells is the presence of mitochondria. Thus, the correct option for this question is D.

What is a Prokaryotic cell?

A prokaryotic cell may be defined as a type of cell which is present in prokaryotes. This type of cell typically lacks a well-defined nucleus and other membrane-bound cell organelles. Organisms like bacteria, archaea, etc. possess this type of cell.

All prokaryotes and eukaryotes have a cell membrane known as a Plasma membrane. Most prokaryotic organisms have a small amount of genetic material in the form of a single molecule known as circular DNA.

Protein synthesis is one of the essential functions of all cell types. Ribosomes are significantly found in every type of eukaryotic as well as prokaryotic organisms like bacteria.

Therefore, the presence of mitochondria is a characteristic that is only common to eukaryotic cells but is not found in prokaryotic cells.

To learn more about Prokaryotic cells, refer to the link:

https://brainly.com/question/5716507

#SPJ6

Which is the role of the electron transport chain in the process of photosynthesis? A. Cycling electrons between photosystem and photosystem ll B. Adding energy to the electrons that enter photosynthesis C.Carrying electrons from photsystem I1, to photosystem to NADP O D. Removing electrons from the chloroplasts​

Answers

Answer:

c.

Explanation:

Because youcaring electrons from photosystem II, to photosystem I, to NADP+

I took this test about it hope that helps :D

The role of the electron transport chain in the process of photosynthesis will be carrying electrons from photosystem 1, to photosystem to NADP. The correct option is C.

What is electron transport chain?

An electron transport chain is a collection of protein complexes and certain other compounds that donate electrons from electron donors to electron acceptors via redox reactions and couple this electron transfer with the transfer of protons across a membrane.

Photosystems I and II are protein complexes found in the thylakoid membrane.

Their function is to capture high energy electrons from chlorophyll and pass them on to a series of electron carriers before splitting water to form oxygen and hydrogen ions and producing NADPH.

Electron transport contributes to the formation of a proton gradient, which drives ATP production and also stores energy in the reduced coenzyme NADPH.

This energy is used to power the Calvin Cycle, which produces sugar and other carbohydrates.

Thus, the correct option is C.

For more details regarding electron transport chain, visit:

https://brainly.com/question/24372542

#SPJ2

Which study would have produced the least trustworthy results?

Answers

Answer:

A

Explanation:

The answer is b I think

identify earths neighbors in the solar system by choosing the correct answer

Answers

Answer:

Mars and venus

Explanation:

Answer:

The planets are bodies of rock or gas that are named for ancient gods.

Asteroids and meteoroids are made of rock or metal, which often collide with Earth.

The terrestrial planets are most similar to Earth.

The Juno probe is exploring the planet Jupiter.

____________is located in the mitochondrial membrane.
a. The citric acid cycle
b. Glycolysis The electron transport chain
c. The electron transport chain.
d. Pyruvic acid​

Answers

Answer:c

Explanation: I did the same quiz and the answer is c

You just went to McDonald's and purchased a Big Mac what type of macromolecule is represented in each of the following?

Answers

Answer:

There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids), and each is an important component of the cell and performs a wide array of functions. Combined, these molecules make up the majority of a cell's mass.

The flow of energy through living systems can be modelers as food chains , food webs , or energy pirámide. The energy organisms need to live and grow first enters the ecosystem when which of the following occurs?

Answers

Photosynthesis
Explanation:
The energy organisms need to live and grow first enters the ecosystem through the process of photosynthesis when green plants manufacture their food.
Photosynthesis is the process in which green plants manufactures their foods in the presence of sunlight(solar energy) using water and carbon dioxide.
The sunlight synthesizes energy rich compounds in this process.
There is a transformation of solar energy to chemical energy.
Different organisms rely on this chemical energy for their own energy needs.

What Structure can be found in both a virus and a cell?

Answers

Answer:

Nucliec Acid :)

Explanation:

100 points
Due Oct 12, 11:59 PM
Extension Draw a diagram and write a paragraph which explains how humans have produced a desired characteristic in
a cow through selective breeding. Use an example in your answer. Also, explain the advantage of your desired
characteristic.
Write down some of the limitations of selective breeding

Answers

Answer:

If this is supposed to be an essay, do some reaseach...

Explanation:

Most of the life of any cell is spent in a period of growth called ____.a.interphase.telophase.prophase.anaphase

Answers

Interphase, the cell spends 90% of its time in this phase.

How long after the Big Bang before stars could form
A. 5billion years
B. 3 millions years
C. Stars formed immediately after the Big Bang
D. 3 billion years

Answers

Answer:

c.

Explanation:

in what ways is ATP like a fully charged battery?

Answers

Answer:

ATP ATP can be compared to a fully charged battery because both contain stored energy, whereas ADP resembles a partially charged battery. Releasing Energy From ATP The energy stored in ATP is released when ATP is converted into ADP and a phosphate group.

Explanation:

The ATP molecule is comparable to a battery that can be recharged. It is ATP when ultimately charged. It's ADP when it's worn out. When the battery runs out, it is simply recharged rather than discarded.

What is ATP?

A vital "energy molecule" in all living things is adenosine 5′-triphosphate, also known as ATP and typically written without the 5′-. In particular, it is a coenzyme that transfers cells' energy by liberating its phosphate groups when it interacts with enzymes like ATP triphosphatase. The molecule comprises an adenine bicyclic system, a furanose ring, and a triphosphate chain.

The discovery of ATP was announced in 1929 by two research teams. It was isolated from mammalian muscle and liver by Cyrus H. Fiske and Yellapragada Subbarow at Harvard Medical School (Boston). Karl Lohmann discovered it in muscle tissues while working for the Kaiser Wilhelm Institutes in Berlin and Heidelberg.

Over the next 15 years, ATP separation from other sources came next. In 1987, Koscak Maruyama of Chiba University (Japan) provided a thorough analysis of ATP's discovery and structural elucidation.

Therefore, ATP is like a rechargeable battery because it can be recharged and discharged.

Read more about ATP, here

https://brainly.com/question/14637256

#SPJ2

Which type of heat transfer causes a person sitting by the fire to feel warm?
a, absorption
b, conduction
c, convection
d, radiation

Answers

The answer is C, convection

which of the following characteristics would be most accurate in hierarchically classifying a newly discovered organism?

habits
behavior
generic material
reproductive strategies​

Answers

The answer is c.) genetic material

How many chromosomes do humans have in total in each body cell

Answers

Their are 46 chromosomes is a human body
Human has 23 pairs of chromosomes which makes a total of 46

A student states that exercise will affect the number of times a person can squeeze a clothespin in a certain amount of time. An experiment is carried out to test this hypothesis. One group of ten students sits quietly before squeezing a clothespin as many times as possible during a one-minute interval. A second group of ten students does 25 jumping jacks before squeezing a clothespin as many times as possible during a one-minute interval. What is the independent variable?

Answers

Answer:

EXERCISE

Explanation:

In an experiment, the independent variable is the variable that the experimenter changes or manipulates in order to bring about a measurable outcome.

In this case, an experiment is carried out to test the hypothesis that "exercise will affect the number of times a person can squeeze a clothespin in a certain amount of time". The experiment contained two groups (one group sits quietly before squeezing a clothespin as many times as possible and the other does 25 JUMPING JACKS before squeezing a clothespin as many times as possible).

The independent variable is the EXERCISE (jumping jacks) that was changed for each group in the experiment.

What does it take to become a king?

Answers

Answer:

Alternatively, an individual may become monarch by right of conquest, acclamation or a combination of means. A monarch usually reigns for life or until abdication. If a young child is crowned the monarch, a regent is often appointed to govern until the monarch reaches the requisite adult age to rule.

Explanation:

pls give brainliest i need 1 more to be an expert

Match the part of the viral replication cycle with the order in which it occurs
Column A
Column B
1.
d
1 st
a. viral genome is replicated using host cell's machinery
2.
2nd
b. virus penetrates and inserts genome into cell
3rd
C virus attaches to cell surface
3. 4. 5.
4th
d. new viruses are assembled within host cell
5th
e. the cell ruptures and releases new viruses to infect new
cells
6.
6th
f. viral proteins are synthesized within host cell

Answers

Answer:

1. c. virus attaches to cell surface

2. b. virus penetrates and inserts genome into cell

3. f. viral proteins are synthesized within host cell

4. a. viral genome is replicated using host cell's machinery

5. d. new viruses are assembled within host cell

6.  e. the cell ruptures and releases new viruses to infect new  cells

Explanation:

First, the virus attaches to the cell. Then it penetrates the cell membrane and inserts its genome inside the cell. The virus relies on the cell machinery to synthesize its proteins, and also to replicate its genome.

With these components being synthesized and replicated, new viral particles are assembled inside the host cell. Eventually, the cell ruptures, and the newly assembled viruses are released and able to attach to new cells to repeat the cycle

Community dynamics are changes in community structure and composition
over time
within 1 year
O within 25 years
O within 1 day

Answers

........................

Which types of friction are observed in this avalanche?

Answers

Answer:

kinetic is one of them.

Question 2/7
What level of ecological organization is this?
A. Individual
B. Population
C. Community
D. Ecosystem

help me please help me please​

Answers

it is c because everyone is gathering together in one place

Cellulose helps plánts:
grow more quickly
stand up straight
take in and release gas
make food

Answers

Cellulose helps plants stand up straight.

Answer:

stand up straight

Explanation:

Cellulose is a tough substance that helps strengthen the sctructure of a plant.

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? A. It decreases the activation energy needed to start the reaction. B. It decreases the total energy released by the reaction. C. It increases the total energy absorbed by the reaction. D. It changes the ratio of the amounts of the two products.

Answers

Answer:

A. It decreases the activation energy needed to start the reaction

Explanation:

Organic catalyst which speed up the rate of organic chemical reaction is living cells are called enzymes.They have specific reaction site called active sites.This must be in prefect shape with the substrate for the organic chemical reaction to take place

When this occurs the minimum amount of  energy of  reaction to  activate or stimulate  the the atoms and molecules of the substrate to undergo chemical reaction is  lowered.This energy of reaction is celled activation energy.

Catalase thought its active sites lowers the activation energy so that the molecules of H2O2 could break down to C02 and H2 faster,thereby reducing the time for theses product to form.The is the general roles of enzyme.To increase the rate of chemical reaction,by reducing the activation  energy.

Match the eukaryotic kingdom vith the appropriate description plants all multicellular: make their own food mostly unicellular, some make thhere ovn food. others consume their food protists unsgi mosty multiceliular, eat dead or decaying Organisms​

Answers

Question:

Match the eukaryotic kingdom with the appropriate description

all multicellular, make their own food all multicellular, eat other organismsmostly unicellular, some make there own food. others consume their food mostly multicellular, eat dead or decaying organisms​

Fungi

Plants

Animal

Protists

Answer:

all multicellular, make their own food - plantsall multicellular, eat other organisms - animalsmostly unicellular, some make there own food. others consume their food - protistsmostly multicellular, eat dead or decaying organisms​  - fungi

Explanation:

All plants and animals are multicellular organisms. Plants are autotrophs, meaning they can make their own food (usually by photosynthesis). In contrast, animals rely on other organisms as a food source (are heterotrophs)

Fungi and protists are more variable. Protists are mostly small unicellular organisms, some perform photosynthesis to make their own food, others eat other organisms.

Fungi usually consume dead or decaying matter (decomposers)

Forensic Science Please Help!!
What are some of the ways that a document examiner might try to match a questioned document to a specific typewriter? What aspects might they look at?

Answers

Answer:

Some of the ways you could try to match a questioned document to a specific typewriter would be to match the handwriting, you could also look at different changes made in the handwriting.

Some of the ways you could try to identify a questioned document to a specific typewriter would be to match the handwriting, you could also look at different alterations made in the handwriting.

Why is forensics important?

The criminal justice system cannot function without the contributions of forensic science. Forensic scientists collect evidence from crime scenes and other locations, assess that evidence, and then create objective conclusions based on their findings. These conclusions can either aid in the investigation and conviction of criminals or clear an innocent individual of any wrongdoing.

Studies of handwriting for forensic purposes are an essential component of the legal system. These examinations seek to ascertain whether or not handwritten documents can be traced to particular writers by making a comparison to known exemplars of that handwriting.

Learn more about forensic science, here:

https://brainly.com/question/21601148

#SPJ3

Where does the most absorption of nutrients take place?
1. liver
2. small intestine
3. large intestine
4. stomach

Answers

Answer:

It's intestine but partially small intestine

I need help with question in science I will send you the picture ​

Answers

Answer:

Send me the Pic please so I will help you out with it

Clockwise, if you’re sitting on a clocks hand, you are moving clockwise. Bro, this isn’t a science question. It’s a common sense question

TRUE or FALSE
Valence tells to what extent an atom can combine.

Answers

Answer:

I am 100% sure that the answer is (True).

I’m sure it would be true!!

what are the limitations of the respiratory system?

Answers

Answer:

Having gills, or the ability of gills.

Explanation:

Our lungs can't filter out water and use the oxygen in the water, sadly.

And, we can't hold our breath for that long, compared to other mammals (the only way that we can hold our breath for a long time is if we breathe in pure oxygen).

How do nutrients move through an environment? What drives the movement of nutrients?

Answers

Answer:

The nutrient cycle is a system where energy and matter are transferred between living organisms and nonliving parts of the environment. This occurs as animals and plants consume nutrients found in the soil, and these nutrients are then released back into the environment via death and decomposition.

The nutrient cycle is a system that transfers energy and matter between living organisms and non-living elements of the environment.

How do nutrients move?As the concentration of nutrients around the root system decreases, nutrients from higher concentration areas diffuse - or move - toward low concentration areas and the roots. They only move a short distance, however. Potassium (K) and phosphorus (P) primarily move via diffusion.The nutrient cycle is a system that transfers energy and matter between living organisms and non-living elements of the environment. This occurs when animals and plants consume soil nutrients, which are then released back into the environment through death and decomposition.The movement of nutrients to the root surface in response to a concentration gradient is referred to as diffusion. When nutrients are found in higher concentrations in one area than in another, there is a net movement to the low-concentration area, resulting in equilibrium.

To learn more about : Diffusion.

Ref :  https://brainly.com/question/94094

#SPJ2

Other Questions
A student loaded a mixture of compounds onto a silica gel column using 5 mL of dichloromethane as the loading solvent. After running the column using petroleum ether as the eluant and collecting 8 fractions, the student analyzed the contents by TLC to find that all of the compounds in the mixture came off in the first two fractions. In addition, no separation was observed. Choose the statement that BEST describes the error. The sample should be loaded using a maximum 1 mL of CH2Cl2. Petroleum ether was the incorrect eluant. A more polar solvent should have been used. The student should re-run the TLC. It was obviously performed incorrectly. The student packed the column incorrectly. Help meeeeeeeeeee pleasee !! describe 2 physical and 2 chemical changes involved in cookingPlease answer quick!!! b) Write 25 x 10 in standard form. Why did the British advancement get stalled? Lisez la rponse and choisissez la question qui est forme correctement.Oui, Brigitte et moi, nous tudions l'anglais.Est-ce que vous tudiez l'anglais ?Vous tudiez l'anglais, est-ce que ?Est-ce qu'vous tudiez l'anglais ?HELP ASAP 1. -9n + 1 = -802. 144 = 144 = -12(m + 5)3. -243 = -9(10 + r) 4. -10 = -10 + 7x5. 4 - 7m = - 666. 2(y 3) = 127. 16 = 2(1 + 7a)8. 3 + 5r = 47 9. 10x + 6 = 74 With work please :) Please and ty For the function f(x) = 4x 6, find x if f(x) = 22 explain what elective you believe schools should include in their curriculum? The height of a golf ball hit in the air is modeled by the equation ()=162 + 48, where () representsthe height, in feet, and represents the number of seconds that have passed since the ball was hit.Complete the statement about the function for (2)=32If (2)=32 , then the ball reached a height of _________ feet after _________ seconds. Put these numbers in ascending order, smallest first.0.56 0.506 0.65 0.605 HELLLOOOO THIS IS DUE HELP why do the fnaf animatronics try to kill you? ]In these chemical compounds, C is for carbon, O is for oxygen, N is for nitrogen, and K is for potassium.Which chemical compound is most likely inorganic?O HOOCH1 Show work pls What is the equation in slope-intercept form of the line that passes through the point (2, -2) and is perpendicular to the line represented by y=2/5x +2 ? A team is playing a game and currently has 43 points. If they lose 56 points and then gain 13 points, what will their score be? Write an expression that models this situation and evaluate the expression. 5. A function is given below.f(x) = 3x2 - x + 6What is f(2)?2 Sylvia set a treadmill for 38 minutes, and so far she has run 61% of the minutesWhich is the best estimate for the number of minutes Sylvia has run so far?O 18 minutesO 21 minutesO 24 minutesO 28 minutes Keiala drives 324 miles in 4 hours. How many miles does she drive each hour? What are the features of the quadratic function f(x) = x^2 + 10x + 21?A) Vertex = (-5,-4), y-intercept = (0,21), x-intercepts = (-7,0) and (-3,0), axis ofsymmetry is x = -5B)Vertex = (5,4), y-intercept = (0,-21), x-intercepts = (-7,0) and (-3,0), axis ofsymmetry is x = 5C)Vertex = (-4,-5), y-intercept = (0,21), x-intercepts = (-7,0) and (-3,0), axis ofsymmetry is x = -4D)Vertex = (-5,-4), y-intercept = (21,0), x-intercepts = (3,0) and (7,0), axis ofsymmetry is x= -5