Critical Thinking Activities - Chapter 5 Answers

  1. More lactic acid: Your cells have temporarily exhausted supplies of oxygen (105-106).

  2. The cells of these organs could only produce ATP by lactic acid fermentation which would be inadequate for their needs (112, 114). Death will occur if enough cyanide has been administered.

  3. Fatty acids are going to have a longer hydrocarbon chain than octane so they will yield more energy per molecule (116). However, the amount of energy per carbon atom is comparable. Fox (116) does mention that fats are the main energy storage method of the body, just as gasoline is for an automobile.

  4. Acetone: (117).

  5. You are excreting a lot of nitrogenous waste products because you are breaking down your tissue proteins and using the amino acid skeletons for energy (same island, same page: 117).

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