Biology / Unit 2 Bio 0330 short lesson, about 20 seconds
Cholesterol's Role in the Membrane
Captions available
The idea
Cholesterol sits alongside membrane phospholipids and buffers the effect of temperature, keeping the membrane fluid at low temperatures and less fluid at high ones.
In practice
Animal cell membranes hold cholesterol between phospholipid tails, widening the temperature range across which the membrane still functions.
Where people slip
Cholesterol moderates fluidity in both directions at once — a buffer, not a fluidizer or stiffener alone.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
- Nothing yet depends on this.
Something wrong in this lesson? Flag it · Sources for Biology