A) All are proteins
B) All act at less than 7 pH
C) All are produced in stomach
D) All are hormones
Correct Answer: A
Solution :
Amylase, renin and trypsin are enzymes secreted from salivary gland, stomach and pancrease respectively. All enzymes are composed of proteins and they increase rate of a reaction by decreasing energy of activation. These acts at a specific pH (i.e., pH may be acedic, neutral or basic depends for a specific enzyme). Enzymes are secrete by glands with ducts like gastric glands. Hormones are secreted from ductless glands (endocrine glands) like thyroid, adrenal.
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