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MCAS Biology Practice

Category - Biology

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Which of the following statements best describes an effect of pH on the functioning of salivary amylase?
  1. Salivary amylase functions most effectively at a pH of about 4.
  2. Salivary amylase functions most effectively at a pH of about 7.
  3. Salivary amylase cannot break down starch into maltose at pH values less than 7.
  4. Salivary amylase breaks down protein instead of starch at pH values greater than 9.
Explanation
Answer: B - Salivary amylase functions most effectively at a pH of about 7.
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