Chp 3.1

Question 1

components of plasma membrane?

Answer 1

Protein and phospholipid

Question 2

The name of the model?

Answer 2

Fluid-mosaic model

Question 3

2 parts of phospholipid molecule

Answer 3

1) Polar head
- Hydrophilic (attracted to water)
2) Nonpolar tails
- Hydrophobic (repelled by water)

Question 4

What molecule are between the phospholipid molecule?

Answer 4

Cholesterol molecule

Question 5

The functions of cholesterol molecule?

Answer 5

Make the bilayer :
1. More stronger
2. More flexible
3. Less permeable to water soluble substances

Question 6

2 types of proteins

Answer 6

1. channel protein
2. carrier protein

Question 7

carbhydrates attached to protein?

Answer 7

Glycoprotein

Question 8

carbohydrate attached to lipid?

Answer 8

glycolipid

Question 9

functions of glycolipidand glycoprotein?

Answer 9

1. act as reseptors to hormone
2. stabilise the membrane
3. act as antigens for cell identification