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Type: Multiple-Choice
Category: Respiration, Digestion, and Excretion
Level: Grade 9
Author: DebBioBeCa
Last Modified: 6 years ago

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Respiration, Digestion, and Excretion Question

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Grade 9 Respiration, Digestion, and Excretion

At what pH are both pepsin and trypsin active at the same time?
  1. Pepsin and trypsin are both active at a neutral pH.
  2. There is no pH where pepsin and trypsin are both active.
  3. Pepsin and trypsin are both active when the pH is between 2 and 6.
  4. Pepsin and trypsin are both active when the pH is between 4 and 5.