BMS100 Past Test Questions
Chapter 4, Fall 2008

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1. Under what circumstances do anabolic processes prevail over catabolic processes?
   1. when oxygen cannot be adequately supplied to muscles
   2. when a person is growing or gaining weight
   3. when a person is starving or losing weight
   4. none of the above (in all living organisms, anabolic and catabolic processes are perfectly balanced)
   
   
2. The human body can convert the chemical energy in food into
   1. other forms of chemical energy (ATP, etc.)
   2. mechanical energy (energy of motion)
   3. electrical energy (in nerve cells, etc.)
   4. heat
   5. all of the above
   
   
3. In a typical human cell,
   1. the first phase of cellular respiration (glycolysis) requires oxygen but the second phase (Krebs cycle) does not require oxygen
   2. the first phase of cellular respiration (glycolysis) does not require oxygen but the second phase (Krebs cycle) does require oxygen
   3. both the first and the second phases of cellular respiration require oxygen
   
   
4. Carbon dioxide is produced
   1. by glycolysis under aerobic conditions
   2. by glycolysis under anaerobic conditions
   3. by the Krebs (citric acid) cycle under aerobic conditions
   4. by the Krebs (citric acid) under anaerobic conditions
   
   
5. Lactic acid is produced
   1. when blood sugar levels are high
   2. when a muscle is forced to continue working after it has used all of its fuels
   3. when a muscle is forced to continue working after it has used all of its oxygen
   4. in muscles, during the recovery phase following intense exercise
   5. in the liver, during the recovery phase following intense exercise
   
   
6. Compared to "slow twitch" fibers, "fast twitch" muscle fibers are
   1. darker in color
   2. larger and stronger
   3. better able to sustain aerobic respiration for long periods of time
   4. all of the above
   5. none of the above
   
   
7. During prolonged exercise, fatty acids may serve as a fuel in
   1. muscles
   2. the heart
   3. the brain
   4. A. and B.
   5. all of the above
   
   
8. Depending on the circumstances, amino acids can be
   1. linked into polypeptides (proteins)
   2. converted to carbohydrate
   3. converted to fatty acids which are used to synthesize fat
   4. "burned" for energy
   5. all of the above
   
   
9. Which one of the following is a not a catabolic process?
   1. Conversion of glucose to glycogen when blood sugar levels are high.
   2. Conversion of triglycerides (fat) to fatty acids when intake of Calories is insufficient.
   3. Conversion of protein to amino acids when intake of Calories is insufficient.
   
   
10. Which one of the following is true?
    1. More than one-half of the Calories consumed per day eventually become heat ("body heat").
    2. If heat production by the body exceeds heat loss from the body, the body temperature will increase.
    3. If heat loss from the body exceeds heat production by the body, the body temperature will decrease.
    4. B. and C.
    5. All of the above.