Biological Membranes

Question 1

What are biological membranes?

Answer 1

Biological membranes are the inside and outside of a cell organelle

Question 2

What are biological membranes?

Answer 2

Biological membranes are the inside and outside of a cell/organelle

Question 3

State the functions of biological membranes

Answer 3

√Barrier to toxic molecules
√Help accumulate nutrients
√Carry out energy transduction
√Facilitate cell motion (movement)
√Assist in reproduction
√Mediate cell- cell interactions

Question 4

Give the constituents of cell membranes

Answer 4

Lipids
Proteins
Carbohydrates

Question 5

Lipids

Answer 5

*Constitutes about 50% mass of most animal cell membranes
They are generally insoluble in water
Part of the molecule is hydrophobic and hydrophilic

Question 6

Explain 
Monolayers
Micelles
Bilayers
Liposomes

                                  MONOLAYERS

Answer 6

Monolayers: This is the addition of small amount of fatty acids to aqueous solutions

Question 7

Micelles

Answer 7

Further addition of fatty acids to aqueous solutions will form micelles

Question 8

Bi- layers

Answer 8

They consist of back to back arrangement of monolayers

Question 9

Liposomes

Answer 9

They consist of spares of lipid bilayers that enclose part of the aqueous medium