One of the functions of cholesterol in animal cell membranes is to

a. phosphorylate adp.

b. facilitate transport of ions.

c. maintain membrane fluidity.

d. store energy.

e. speed up diffusion

Which of the following is true about muscle tone? A. It is responsible for keeping the back and legs straight when you're relaxed. B. It decreases as you exercise more. C. It increases with age. D. It describes the relaxing of some muscles.

What is the end product of mitosis?

Why did California vote to get rid of Daylight Savings? I will give brainliest to whoever answers first!

Why does DNA need to be copied into mRNA?

if a man is pushing a wheelbarrow up a hill, describe what is occurring in terms of energy when the man is half way up the hill

What is an abiotic factor of a marine ecosystem? A). Food produced B). Temperature change as you go deeper into the ocean C). Reproduction of animals

1. Suppose that xylem were located only in the roots and stems of a plant. Would fluids in the xylem still move? Explain.

What activity will decrease body temperature? Sweating Exercising Adding clothing Shivering

Organisms with true radial symmetry A. tend to be highly mobile. B. do not have a distinct head region and tend to be sedentary or passive drifters. C. can be divided into two matching halves along only one plane. D.

1. The Earth's carbon cycle consists of the flow, cycling, and recycling of all of the carbon on the Earth. Every living organism's composition includes the element carbon. How does carbon become part of living organisms?