Biology (Day 9; The Cell Membrane)

Question 1

Amphipathic

Answer 1

A molecule that contains both a hydrophobic and hydrophilic end

Question 2

Phospholipid

Answer 2

Amphipathic lipids made out of glycerol, two fatty acids, and a phosphate group

Question 3

Phospholipid bilayers

Answer 3

A biological membrane involving two layers of phospholipids with their tails pointing inward

Question 4

Semi-permeable membrane

Answer 4

A membrane that allows certain substances to pass through

Question 5

Which ends point inward, and which ends point outward?

Answer 5

the hydrophobic ends point inward, and the hydrophilic ends point outward

Question 6

The cell membrane contains a phospholipid bilayer, but these terms are not interchangeable. Why?

Answer 6

The cell membrane contains many more molecules (carbohydrates, lipids, etc.)