Select one answer. How does the selective permeability of the membrane help the

ID: 48836 • Letter: S

Question

Select one answer.

How does the selective permeability of the membrane help the cell.

This allows the cell to maintain the proper shape.

This allows the cell to regulate what enters and exits

This allows the cell to maintain a constant temperature.

All of these

Question 6

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What is the role of carbohydrates in the plasma membrane?

cellular identification

adhesion

transport materials across the membrane

help maintain fluidity

Question 7

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Which component of the plasma membrane has the widest variety of functions?

sterols

carbohydrates

phospholipids

proteins

Question 8

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All of the following have an effect on the fluidity of a membrane except:

interactions among fatty acids in the core of the bilayer

the cholesterol content

the ratio of saturated to unsaturated fatty acids

the presence of integral proteins in the membrane

Explanation / Answer

How does the selective permeability of the membrane help the cell- All of the above

Explaination:A feature and a function of the plasma membrane that is essential to maintain homeostasis by regulating the passage of some substances while preventing others from entering the cell.

6. What is the role of carbohydrates in the plasma membrane?adhesion

Explaination: Carbohydrates often attach to the external surface of integral proteins. These carbohydrates may hold adjoining cells together or act as sites where viruses or chemical messengers such as hormones can attach.

7. Which component of the plasma membrane has the widest variety of functions? Proteins.
Explaination- Other component contribute most on the selective permeability.

8. All of the following have an effect on the fluidity of a membrane except: the presence of integral proteins in the membrane

Cholesterol helps regulate the fluidity of the membrane when the temperature is too hot or too cold. The interactions of fatty acids are kind of what make up the fluidity. And the saturated fats are less fluid, while the unsaturated fats increase fluidity

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