Test #2A Sample Test


1. A fungus growing on rotting food would be which of the following?
a. photoautotrogh
b. chemoautotrouph
c. photoheterotrouph
d. chemoheterotroph
e. none of the above
2. Which of the following would not be generated during glycolysis?
a. ATP
b. ADP
c. NADH2
d. NAD
e. Pyruvate
3. Which of the following is NOT an end product of fermentation?
a. Succinic acid or succinate
b. Ethyl alcohol and carbon dioxide
c. Propionic acid or propionate
d. Lactic acid or lactate
e. All are products of fermentation
4. In order for anaerobic respiration to proceed, NADH needs to be oxidized to form NAD. Which of the following would be a reduction product when NADH is oxidized to NAD?
a. CO2
b. H2O
c. pyruvate
d. glucose
e. ethanol
5. Oxygen is used in which phase of respiration?
a. glycolysis
b. Kreb's cycle
c. oxidative phosphorylation
d. lactic acid production
e. carbon dioxide production
6. In addition to carbon dioxide, the oxidation products produced during respiration include which of the following?
a. alcohols
b. aldehydes
c. organic acids
d. methane
e. none of the above would be considered oxidation products
7. Carbon dioxide is produced in which phase of respiration?
a. glycolysis
b. Kreb's cycle
c. oxidation phosphorylation
d. lactic acid production
e. none of the above
8. In addition to producing ATP, the other primary function of respiration is to do which of the following?
a. make CO2
b. use O2
c. make fermentation products
d. make intermediates for use in structural components
e. none of the above
9. The reaction: 2 H2O2 → 2 H2O + O2 is catalyzed by what enzyme?
a. Catalase
b. Oxidase
c. Peroxidase
d. Superoxide dismutase
e. none of the above
10. How many molecules of ATP can be generated from the complete oxidation of glucose to CO2 and H2O?
a. 2
b. 4
c. 34
d. 38
e. 76
11. Which of the following reactions would most likely generate ATP (ATP and ADP not shown)?
a. Glucose → glucose-6-phosphate
b. Phosphoenolpyruvic acid → pyruvic acid
c. Glucose-6-phosphate → glucose-1,6-diphosphate
d. Glyceraldehyde-3-phosphate + PO4-3 → 1,3-diphosphoglyceric acid
e. Pyruvate + NADH2 → NAD+ + lactate
12. Which of the following is most oxidized?
a. Methane (CH4)
b. Oxaloacetate
c. Pyruvate
d. Glucose
e. Glucose-6-phosphate
13. If a chemical binds to an allosteric site of an enzyme, which of the following will be the most likely result?
a. inhibit the enzyme competitively
b. lower the activation energy
c. it will have no effect on enzyme activity
d. it will reduce the rate of enzyme activity
e. it will cause the enzyme to migrate through a membrane
14. Which of the following compounds would have the greatest amount of chemical potential energy for a cell?
a. carbon dioxide
b. lactic acid
c. pyruvic acid
d. succinic acid
e. glucose
15. Energy captured during chemiosmosis occurs as which of the following move through the membrane?
a. ATP
b. phosphate
c. protons
d. NADH2
e. FADH2
16. Which of the following would NOT be produced during the Kreb's cycle?
a. carbon dioxide
b. ATP (as GTP)
c. NADH2
d. citric acid
e. pyruvate
17. Which of the following temperatures would most likely kill a mesophile?
a. -50°C
b. 0°C
c. 9°C
d. 37°C
e. 80°C
18. For each reduced nicotinamide adenine dinucluotide (NAD) produced, how many ATP's are obtained?
a. one
b. two
c. three
d. four
e. five
19. Which of the following would be least likely to be an enzyme cofactor?
a. pyruvate
b. biotin
c. Fe3+
d. Coenzyme Q
e. Zn2+
20. An enzyme does which of the following?
a. raises chemical potential energy
b. lowers chemical potential energy
c. raises activation energy
d. lowers activation energy
e. increases the energy obtained from a reaction