2. Energy requiring transport mechanismsinclude
A. Primary active transport
B. Diffusion
C. Facilitated diffusion
D. Both A and B are correct
E. Both A and C are correct
3. The fixation of nitrogen requires_______.
A. Fe-Mo protein
B. Fe protein
C. Ferredoxin
D. Both A and B are correct
E. All of the above are correct
4. Membranes are rigid when they contain
A. Large amounts of cholesterol
B. Large amounts of unsaturated fatty acids
C. Large amounts of saturated fatty acids
D. Large amounts of water
E. A and B
5. Membrane remodeling
A. Requires phospholipases
B. Requires acyl transferases
C. Occurs only when cells are under stress
D. Both A and B are correct
E. All of the above are correct
7. Which of the following is not a function oflipids
A. Energy storage
B. Components of biological membranes
C. Insulation
D. Source of acetyl-CoA
E. All of the above are functions of lipids
