1. Which two are primary complexes for protein synthesis and degradation in eukaryotes?
A. ribosomes and proteasomes
B. ribosomes and lysosomes
C. proteases and lysosomes
D. proteases and proteasomes 
E. ribosomes and mRNA

2. All of the following have potential energy EXCEPT
A. ATP.
B. nitrogen.
C. an electrical/ion gradient.
D. concentration gradient. 
E. NADH 

3. Which of the following statements about catabolic reactions is FALSE?
A. They recycle organic building blocks.
B. They produce energy like ATP.
C. They produce energy in the form of energy intermediates like NADH.
D. They occur through the oxidation of substrates.
E. They usually require an input of energy.

4. If one were to double the amount of enzyme in a reaction with an initial ΔG of -5 kcal/mole, what would the ΔG be?
A. -5 kcal/mole
B. -10 kcal/mole (not correct)
C. -20 kcal/mole
D. +5 kcal/mole
E. +10 kcal/mole

5. Which is True of the following reaction: Pi + ADP -> ATF?
A. It has a change in free energy that is less than 0.
B. It has a change in free energy that is greater than 0.
C. It can be used to drive endergonic reactions.
D. It yields energy.
E. It has a change in free energy that is greater than 0, and hence can be used to drive endergonic reactions

6. 21. Which of the following reactions would require the hydrolysis of at least two ATP molecules (ΔG = -14.6 kCal) for it to occur?
A. A reaction that has a ΔG = -8 kCal.
B. A reaction that has a ΔG = +8 kCal.
C. A reaction that has a ΔG = -16 kCal. 
D. A reaction that has a ΔG = +16 kCal.
E. A reaction that has a ΔG = -14.6 kCal.

7. Which of the following statements about feedback inhibition in metabolic pathways is most CORRECT?
A. The product of the pathway inhibits its own production by binding reactants in the metabolic pathway.
B. The product of the pathway inhibits its own production by competitively inhibiting the binding of a substrate to the active site of an enzyme within the metabolic pathway. 
C. The product of the pathway inhibits its own production by noncompetitively inhibiting the binding of a substrate to the active site of an enyzme within the metabolic pathway.
D. The product of the pathway inhibits its own production by noncompetitively binding to reactants.
E. All of the choices are correct.