Cell membranes are a border between the aqueous
environment outside the cell and the aqueous
environment of the cytoplasm inside the cell. Cell
membranes are in part made of phospholipid polymers.
Based on the properties of the monomers that make up the phospholipid polymer, which of the following best predicts how the two phospholipids are positioned in the cell membrane?

A) The hydrophilic heads will face outward toward the cell's exterior and inward toward the cell's interior. The fatty acids will be tail-to-tail in the center of the membrane.

B) The glycerol region in the fatty acid will bend toward the interior of the cell. The choline will bend toward the exterior of the cell.

C) The hydrophobic heads will bind with other
hydrophobic heads and turn inward to the center of
the membrane. The fatty acids will randomly move, giving the membrane fluidity.

D) One choline will turn inward toward other choline in the bilayer. The fatty acids will be attracted to the choline and form the interior of the membrane.​

Cell Membranes Are A Border Between The Aqueousenvironment Outside The Cell And The Aqueousenvironment

Answers

Answer 1

Answer:

I think it’s C because the tails are inside the lipid bilayer and the choline which looks like the hydrophilic heads are the exterior

Answer 2

The hydrophobic tails of the phospholipid are in the interior with the hydrophilic heads facing the aqueous envrionment internally and externally in the cell membrane.

What is the cell membrane?

The cell membrane is a phospholipid bilayer which serves to separate and protect the internal cell contents from the external envrionment.

The cell membrane membrane is arranged such that the hydrophobic tails of the phospholipid are in the interior with the hydrophilic heads facing the aqueous envrionment internally and externally.

Therefore, the hydrophilic heads will face outward toward the cell's exterior and inward toward the cell's interior while the fatty acids will be tail-to-tail in the center of the membrane.

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Related Questions

how were cells discovered

Answers

Answer:

The cell was first discovered by Robert Hooke in 1665 using a microscope. The first cell theory is credited to the work of Theodor Schwann and Matthias Jakob Schleiden in the 1830s.


Fossil fuels are full of energy stored from photosynthesis millions of years ago

Answers

Answer:

Explanation:

Fossil fuels are full of energy stored from photosynthesis millions of years ago. The light-dependent reactions of photosynthesis occur in the stroma of the chloroplast. ... Photorespiration is the process by which light is used to release the stored energy in carbohydrate molecules to perform all work in plant cells.

Explain why considering tradeoffs is an important part of the optimization process. Explain​

Answers

Answer:

Explanation:

This concept is incredibly important in business because just like in many situations in life one cannot have everything they want and some benefits require sacrifices. In business this also applies, many times you will be faced with two different options both of which offer a very good benefit but only one can be chosen. Usually, the decision is made based on the benefit that will provide the greatest opportunity for the company itself.

HURRY PLEASE!!!
2.Which of the following cannot be found in the cell membrane?

A.) carbohydrate chains

B.) cholesterol

C.) phospholipids

D.) protein pumps

E.) free radical DNA plasmids

I just want the letter answer i dont want a paragraph

Answers

Answer:

E

Explanation:

I think it's E.

Atomic number of helium

Answers

The Atomic Number of helium is 2

This also means helium has 2 protons.

Completa el cuadro comparativo propuesto referente a los tipos de células. En el mismo debes mencionar si posee o no y en caso de ser necesario aclarar con alguna característica que permita diferenciar entre la célula eucariota y procariota de acuerdo al ítem de comparación planteado

Answers

Hey I’m just going home now I’m

What is the connection between macromolecules and biogeochemical cycles?

Answers

Answer:

All of the atoms that are building blocks of living things are a part of biogeochemical cycles. The most common of these are the carbon and nitrogen cycles. Tiny atoms of carbon and nitrogen are able to move around the planet through these cycles.

Explanation:

What is one goal of science?
to discover the truth
to make ideal politicians
to make better business law
to disprove everybody
to correct cultural norms

Answers

Goal of science can be to discover the truth

A student redid the experiment of mixing room-temperature water and warm
water. This time, she doubled the amount of warm water. How will the final
temperature be different?
A. It will be higher, because the amount of water in the mixture is
greater
B. It will be the same, because all parts of the mixture will end up at
the same temperature.
C. It will be lower, because the room-temperature water will absorb
more thermal energy from the warm water.
D. It will be higher, because the warm water will transfer more
thermal energy to the room-temperature water.

Answers

The answer is D because more volume of warm water will go into the mixture

The final temperature will be different by having a high temperature because the warm water will transfer more thermal energy to the room-temperature water. Thus, the correct option is D.

What is Temperature?

The Temperature may be defined as the degree of hotness or coldness measured on a definite scale at a particular location.

If we mix room-temperature water with warm water, the temperature of mixed water is found to be high as compared to the previous room water temperature. This is because warm water is capable of transferring its thermal energy to room-temperature water.

Therefore, the correct option for this question is D.

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a squid moves through the water by ejecting water out of its body into the surrounding water when the water is pushed out the ejected water pushes back and thrusts the squid forward





1st law of inertia

2nd law of mass and acceleration


3rd law of action-reaction

4th law of motion

Answers

Answer:

The answer is Inertia

Explanation:

when the squid is pushing the water is pushing back at the squid, and the third law of inertia states:That for every action there is an equal and opposite reaction. so the squid is pushing the opposite way and the water pushes back.

According to the third law of action-reaction, every force (activity) in nature has an equal and opposing reaction.

the correct answer 3rd law of action-reaction

Why is the third law of Newton termed action-reaction?

This law illustrates how forces always exist in pairs in nature and how one body cannot exert force on another without also being subjected to one. This law is frequently loosely referred to as action-reaction, where the force exerted is the action and the force felt as a result is the reaction.

What is an illustration of the third law?

Everyday life is full of instances of Newton's third law of motion. For instance, when you leap, your legs exert force on the ground, and the earth responds with an equal and opposing force, lifting you into the air.

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More____ cattle will have less marbling


1.Aggressive
2. Passive aggressive
3. Passive
4.mellow

Answers

More 1.AGGRESSIVE cattle will have less marbling

need help i don't understand

Answers

Answer:

Do your research on white blood sells, then describ what they look like, what they do etc.

Explanation:

You should get your answer. Have fun! PLZ mark brainliest.

Proteins are composed of what smaller building blocks?

Answers

Answer:

a. amino acids

How do the parts of an atom differ in terms of mass?
will give Brainliest to correct best looking answer

Answers

Because it takes a lot of atoms to be cause such great compactly

Which of the following correctly describes the outcome of meiosis?
Four haploid daughter cells that are genetically different.
Four diploid daughter cells that are genetically different.
Four haploid daughter cells that are genetically identical.
Four diploid daughter cells that are genetically identical.

Answers

I would go with A. Four haploid daughter cells that are genetically different.

Which of the following processes is directly responsible for growth in living organisms?

Answers

Answer:

The division of cells into two identical cells

Explanation:

Mitosis on quizlet

Which phase change process below involves the addition of thermal energy or heat? (select all of the ones that apply)

1. sublimation

2. melting

3. freezing

4. vaporization

5. condensation

Answers

Answer:

Melting and Vaporization are processes among the following which involves the addition of thermal energy or heat.

The phase change process below involves the addition of thermal energy or heat melting and vaporization are processes among the following which involves the addition of thermal energy or heat. Thus, option D is correct.

What is vaporization?

The term vaporization has been described as the vaporization has the change of phase from liquid state to gas state and condensation is the change of phase from gas state to liquid state. Freezing has the process in which phase change or state change takes place it means that a process in which a liquid change into solid.

Freezing process can be achieved by extracting heat i.e or removing latent heat, latent heat, energy absorbed or released by a substance during a change in its physical state (phase) that occurs without change in temperature.

So, during the formation of ice from water, heat is removed from water at zero degree Celsius at constant temperature, then water changes into ice and a freezing or solidification process may occur in a liquid, initially at a uniform temperature, either above or at the the freezing temperature or fusion point. Freezing is the process which cause ice to form a thin layer over a lake.

Therefore, The phase change process below involves the addition of thermal energy or heat melting and vaporization are processes among the following which involves the addition of thermal energy or heat. Thus, option D is correct.

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Is oxygen a reliable predictor in photosynthesis

Answers

Answer:

Yes

Explanation:

You look at a cell under the microscope and see cell walls and membrane-bound organelles. What type of cell are you looking at? Justify your answer.

Answers

Answer:

Explanation:

Cells fall into one of two broad categories: prokaryotic and eukaryotic. The predominantly single-celled organisms of the domains Bacteria and Archaea are classified as prokaryotes (pro– = before; –karyon– = nucleus). Animal cells, plant cells, fungi, and protists are eukaryotes (eu– = true).

Which organelle captures the energy from sunlight and converts it to chemical energy, and in which cells could it be
found?
the Golgi apparatus, which can be found in lung cells of animals
O lysosomes, which can be found in all cells of grasses
ribosomes, which can be found in muscle cells of humans
chloroplasts, which can be found in leaf cells of trees

Answers

Answer:

Chloroplast

Explanation:

chloroplasts, which can be found in leaf cells of trees captures the energy from sunlight and converts it to chemical energy, and in which cells could it be found.

What are the functions of chloroplats?

Chloroplast has a construction called chlorophyll what capabilities by catching the sun powered energy and is utilized for the combination of food in every single green plant. by photolysis of water.

Chloroplasts produce energy through photosynthesis and oxygen-discharge processes, which support plant development and harvest yield. Chloroplasts are specialized organelles that are characterized by their high concentration of chlorophyll.

They convert light energy into substance energy by photosynthesis. In addition, chloroplasts play a role in the immune response and the synthesis of some amino acids and fatty acids in plants.

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Select the correct answer.
Which work involves technical skills?
ΟΑ. .
dental work
OB. preparation of medical reports
Ochandling an immense work load
OD
calculation of dosages
Reset
Next

Answers

Answer:

I think it is preparation of medical reports

Explanation:

Hope it helps

What is the only organelle that is found in prokaryotic cells? What is it's function?​

Answers

Answer:

Ribosomes.

Explanation:

The function of ribosomes is to make protiens by joining amino acids together.

Answer:.......

Explanation:

Type the correct answer in the box. Spell all words correctly.
What type of program can pet owners participate in to cover unexpected treatment costs for their pets?
Pet owners may opt for pet
to cover the costs of unexpected treatments.
Reset
Next

Answers

Answer:

I;m pretty sure pet Insurance

Explanation:

Hope it helps

The other brainly user is right, (insurance) is the correct answer.

Both plant cells and animal cells contain mitochondrion and yet there were not visible in the ells you viewed in this lab. Does this mean that these organelles are not found in cheek and onion cells?

Answers

Answer:

No! ( in my opinion)

Explanation:

Okay! just because they were not in all the animal and plant cells does not mean their in the cheek and onion cells. I did this experiment in class. we actually were able to find some of the the mito in the onion. All animals and plants are different in some kind. some are rare some are not, this planet contains over a hundred animals and plants we dont know about. hope this helps.

What did cyanobacteria produce that made life possible?

Answers

Answer:

oxygen

Explanation:

The answer is tiny organisms known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen

How many nuclei will be left after the second half-life?

Answers

Answer:

4

Explanation:

What process is oxygen necessary for in all living cells? What are the different ways 3 organisms get oxygen: flatworm, fern, human?

Answers

Answer:

This process is called cellular respiration.

Explanation:

Human- We get oxygen by breathing in fresh air, and we remove carbon dioxide from the body by breathing out stale air.

Flatworm- In order to breathe, they must be able to pass oxygen and carbon dioxide in and out of their bodies through their skin by diffusion. In order for this to work, even the largest flatworms are extremely thin.

Fern- Plants release oxygen during the day in the presence of natural light through the process of photosynthesis. While at night, the plants uptake oxygen and release carbon dioxide.


In the Russian Federation, which official holds the most power?
A. the Duma
B. the president
c. the prime minister
D. the monarch

Answers

B. The president

ex: that’s how it works
President !! Have a good day! :)

Research supports the use of ketogenic diets for patient's with all of the following disorders
EXCEPT?

Answers

Answer:

Despite continuous advances in the medical world, obesity continues to remain a major worldwide health hazard with adult mortality as high as 2.8 million per year. The majority of chronic diseases like diabetes, hypertension, and heart disease are largely related to obesity which is usually a product of unhealthy lifestyle and poor dietary habits. Appropriately tailored diet regimens for weight reduction can help manage the obesity epidemic to some extent. One diet regimen that has proven to be very effective for rapid weight loss is a very-low-carbohydrate and high-fat ketogenic diet

Can an enzyme in pineapple break down other proteins? Why or why not?

Answers

Answer:

Explanation:

Pineapples contain the enzyme bromelain, which breaks down protein. ... Its ability to break down protein is used in cooking, to make meat more tender. (However, only fresh pineapples can be used for this purpose, as the enzymes are destroyed in the cooking process).

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