What is the purpose of the ATP hydrolysis associated with active transport? 1) A

Question

What is the purpose of the ATP hydrolysis associated with active transport? 1) As ADP is produced it carries sodium ions out of the cell. 2) It allows the storage of energy generated by the active transport process ( 3)It provides the energy required to move substances against their concentration gradient O 4) It increases the concentration of phosphate within the cell Save Question 9 (1 point) Which statement is NOT true of cholesterol? 1) It can increase the flexibilty of cell membranes 2) Excess cholesterol is carried to the tissues and stored inside adipose cells 3) It is used in the liver to manufacture bile salts. 4) In moderation, it is an important component of a healthy diet.

Explanation / Answer

8. ATP provides the necessary energy to move the substances against their concentration gradients (namely Sodium and potassium ions).

9. Cholesterol helps maintain the stability of the plasma membrane rather than its fluidity. It decreases fluidity at higher temperature and increases fluidity at lower temperature. The other options are correct.

10. In a hypotonic solution, the concentration of the solutes is greater outside and hence, the water will rush out of the cell and the cell shrivels up.

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