Cell Membrane

Question 1

Fluidity

Answer 1

Affected by temperature, double bond in the fatty acids, and fatty acid tail length

Question 2

Phospholipid bilayer

Answer 2

2 layers of lipids that let particles in & out of the cell

Question 3

Carrier protein

Answer 3

Changes shape to bind to particles to transport them across the lipid bilayer

Question 4

Channel protein

Answer 4

A pore in the membrane that allows for small molecules like water or ions to pass through

Question 5

Cholesterol

Answer 5

Pressure of cholesterol works to counteract the effects of tempature. Controls fluidity

Question 6

Fluid mosaic model

Answer 6

Weak intermolecular forces between lipids in bilayer allows for quick sealing of punctures or damage

Question 7

Proteins

Answer 7

In membrane or attached to outer regions

Functions:
-transport
-reaction catalyst- enzymes
-cell recognition - carbs from glycoproteins- immune system
-signal recognition- hormones