BMS100 Past Test Questions
Chapter 4, Spring 2009
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  1. During periods of growth, the processes known as _?_ processes prevail over other processes.
    1. anaerobic processes
    2. anabolic processes
    3. catabolic processes
    4. both A. and C.

  2. What happens in the first stage of glucose catabolism (glycolysis)?
    1. glucose molecules are linked into long chains known as glycogen
    2. glucose molecules are split into two (2) molecules that contain three (3) carbon atoms each
    3. glucose molecules are split into three (3) molecules that contain two (2) carbon atoms each
    4. glucose molecules enter mitochondria and transformed into fatty acids

  3. Which process cannot continue in the absence of oxygen?
    1. first stage of glucose catabolism (glycolysis)
    2. conversion of pyruvic acid to lactic acid
    3. citric acid cycle (Krebs cycle)
    4. neither A. nor B. can continue in the absence of oxygen

  4. In humans, carbon dioxide is produced during
    1. aerobic respiration
    2. anaerobic respiration
    3. both of the above
    4. none of the above

  5. Which one of the following statements is true?
    1. Aerobic respiration is more efficient than is anaerobic respiration (more ATP is generated per fuel molecule).
    2. Aerobic respiration is close to 100% efficient (100% of the energy in fuel is transferred into ATP).
    3. Both of the above.
    4. None of the above.

  6. Intense bursts of strength (sprinting, jumping, etc.) cannot be sustained for long periods due to the inability of the cardiovascular system to deliver enough _?_ to muscles.
    1. fuel
    2. oxygen
    3. lactic acid
    4. mitochondria

  7. How is most lactic acid removed from blood?
    1. excreted by urinary system
    2. metabolized (processed) in liver, heart, etc.
    3. converted to amino acids within muscle fibers
    4. converted to fatty acids in adipose tissue ("fat")

  8. "Slow twitch" muscle fibers are well-adapted for aerobic respiration and are therefore most useful for
    1. high intensity bursts of strength
    2. prolonged exercise of low-to-moderate intensity
    3. processing lactic acid that was produced by "fast twitch" muscle fibers
    4. storing amino acids and fatty acids during periods of rest and recovery

  9. During starvation, proteins can be broken down into amino acids. What is likely to happen to these amino acids?
    1. They can be metabolized into glucose to support brain function.
    2. They can be channeled into the Krebs (citric acid) cycle to provide ATP.
    3. Both of the above.
    4. None of the above.