What is a chief function of carbonic acid in the body?
a. Activates angiotensin
b. Activates angiotensinogen
c. Helps with gastric digestion
d. Helps maintain acid-base balance
e. Activates calcitonin
ANS: D
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Which of the following is not a major function of zinc?
A. Maintenance of fluid balance B. Regulation of gene expression C. Promotion of immune system functions D. Promotion of eye health
Which enzymes help with protein digestion?
a. amylase and lipase b. sucrase and maltase c. maltase and lactase d. pepsin and trypsin e. lipase and lactase
Housing, sanitation and storage facilities, education, communication, and transportation systems are components of a country's
A. social capital. B. infrastructure. C. social structure. D. architecture.
Excess iodine intakes may increase the risk of
A. anemia. B. dermatitis. C. osteomalacia. D. hyperthyroidism.