PhysioEx 9.0: Exercise 8, Activity 3 (Pre- and post-quizes)

Pre-lab Quiz Results

1. Where in the body does protein digestion begin?
You correctly answered: b. the stomach
2. The substrate for pepsin is
You correctly answered: d. protein and peptides.
3. In this activity the substrate you will be using to detect protein digestion is
You correctly answered: d. BAPNA.
4. Negative results with the negative controls
Correct answer: d. are expected and validate the experiment.
5. A spectrophometer measures
You correctly answered: c. optical density.

Post-lab Quiz Results

1. Pepsin would be most active
You correctly answered: b. in the stomach.
2. Which two tubes validated the results of the experiment?
You correctly answered: c. tubes 3 and 4
3. With more enzyme activity the optical density
Correct answer: a. increased.
4. If pepsin were digesting an actual protein substrate, the product would be
You correctly answered: c. peptides and amino acids.