Question

1. What are the 2 major components of the plasma cell membrane?  Understand how cells can change the degree of membrane fluidity.

Answer 1

The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins.

If saturated fatty acids are compressed by decreasing temperatures, they press in on each other, making a dense and fairly rigid membrane.

If unsaturated fatty acids are compressed, the “kinks” in their tails push adjacent phospholipid molecules away, which helps maintain fluidity in the membrane.

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