Where does most nutrient absorption occur?
A) in the mouth
B) in the stomach, primarily in the body
C) in the small intestine, primarily in the jejunum
D) in the large intestine, primarily in the cecum
E) in the large intestine, primarily in the transverse colon
Answer: C
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Indicate whether this statement is true or false.
The structures in the nucleus that serve as a "mitotic clock" are
A) ribosomes. B) telomeres. C) hormones. D) kinases.
Plasma proteins in capillaries help to
A) maintain the hydrostatic pressure of the blood. B) decrease the hydrostatic pressure of the blood. C) decrease the osmotic pressure of the blood. D) maintain the osmotic pressure of the blood.
cAMP activates ________, which catalyzes the ________ of other enzymes in the cytoplasm.
A. protein kinase; phosphorylation B. calmodulin; hydrolysis C. tyrosine kinase; hydrolysis D. calcium; phosphorylation