In animal cell membranes, cholesterol acts as a fluidity buffer: at high temperatures it _______ fluidity, and at low temperatures it _______ fluidity.
- A
increases; decreases
- Bcheck_circle
decreases; increases
- C
decreases; decreases
- D
increases; increases
Explanation
Cholesterol restrains phospholipid movement at high temps but prevents tight packing at low temps — buffering against extremes.