Structure of the Plasma Membrane

Question 1

+ 2 layers

Answer 1

Lipid Bilayer

Question 2

• basic structural framework
• 3 layers (from the lipid molecule)

Answer 2

Plasma Membrane

Question 3

3 layers

Answer 3

Phospholipids
Cholesterol
Glycolipids

Question 4

• 75%, composed w phosphorous

Answer 4

Phospholipids

Question 5

• 20%, steroid with hydroxyl group
• “fatty acids”

Answer 5

Cholesterol

Question 6

• 5%, carbohydrate group
• sugar

Answer 6

Glycolipids

Question 7

• having both sides of polar and non-polar

Answer 7

Amphipatic

Question 8

• poles (as of magnets)
• could interact with outside charges
• phosphate containing the ‘head’ (hydrophilic)

Answer 8

Polar

Question 9

• 2 long fatty acids
• ‘tails’ hydrophobic hydrocarbon chains

Answer 9

Non-polar

Question 10

• weakly amphipatic (neither nor)
• inserted among lipids in both layers of the membrane
• hydroxyl group is polar
• steroid ring n hydrocarbon tail are non polar

Answer 10

Cholesterol Molecule

Question 11

• forms a polar head
• appears on extracellular fluid
• speaking out of membrane

Answer 11

Carbohydrates: Glycolipids