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Thinking Scientifically
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1. Pepsin is an enzyme that breaks down protein.
a. A student has a test tube that contains pepsin, egg white, and water. What optimal conditions would you recommend to ensure digestion of the egg white?

Answer

b. If all the conditions are optimal, how could you increase the yield (i.e., amount of product--amino acids--per unit of time)?

Answer

c. The instructor adds an inhibitor to the test tube. How could the student tell if inhibition is reversible or irreversible?

Answer
2. A lack of oxygen causes death. Explain why by referring to
a. the overall equation for aerobic cellular repiration.

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b. the necessity of ATP for muscle contraction.

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c. the needs of ordinary body cells.

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d. brain activity as a test of death.

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