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1 | | An infant's stomach has a pH of around 5. How active would pepsin be in an infant's stomach? |
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2 | | Infants (stomach pH 5) and young children produce the enzyme rennin which denatures milk protein. What would you hypothesize about the optimal pH for rennin? |
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3 | | Other than the usual surgical risks involved in operating on an organ related to the digestive system, why should a healthy human appendix not be removed? |
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4 | | Sometimes penicillin tablets are formulated to contain a minimum daily requirement of vitamin K. Why? |
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5 | | The polypeptide hormone insulin is injected into diabetic patients. Why is it useless for the patient to take the drug orally? |
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