Cell membranes

Question 1

What does cholesterol do to membrane fluidity when the temps are low

Answer 1

In low temps, cholesterol keeps phospholipids from packing together

Question 2

What does cholesterol do to membrane fluidity when temps are moderate

Answer 2

At moderate temps, it prevents excess movement by getting in the way.

Question 3

As temperatures increase

Answer 3

phospholipids move faster, making the membrane more fluid

Question 4

As temperature decreases

Answer 4

phospholipid movement slows down and they begin to pack together

Question 5

In animal cells (cells without walls) what happens to the cell in a hypotonic solution

Answer 5

They become lysed or can burst

Question 6

In plant cells (cells with walls) what happens to the cell in a hypotonic solution

Answer 6

They are turgid (normal)

Question 7

In plant cells (cells with walls) what happens to the cell in a isotonic solution

Answer 7

They become flaccid