CH.10: Lecture Questions COMPLETE

Question 1

What component of biological membranes seals one
compartment away from another?

A. Protein
B. Polar lipids
C. Neutral lipids
D. DNA
E. carbohydrate

Answer 1

B. Polar lipids

Question 2

Based on the FRAP figure from the last chapter, membrane
components:

A. Are always anchored to the cytoskeleton
B. Freely pass from the membrane through the cytosol
C. Can diffuse “laterally” around the membrane

Answer 2

C. Can diffuse “laterally” around the membrane

Question 3

Which bond is generally non-polar?

A) NH
B)OH
C) CH
D)O=C

Answer 3

C) CH

Question 4

The distance across the lipid bilayer is greater in:

A. a lipid raft region
B. a region that is not a lipid raft

Answer 4

A. a lipid raft region

Question 5

Transmembrane domains of proteins tend to be longer in proteins that end up in:

A. a lipid raft region
B. a region that is not a lipid raft

Answer 5

A. a lipid raft region

Question 6

Hydrophilic amino acid side chains in a transmembrane helix would
be LEAST likely to interact with:

A. Amino acid side chains in other amphipathic helices
B. An aqueous pore in the protein
C. Lipid tails of the lipid bilayer

Answer 6

C. Lipid tails of the lipid bilayer