A parent of a baby visits the pediatrician because the baby's skin is turning orange. Fortunately, the baby's lab tests indicate no abnormality. What could be causing the orange coloration?
A. The baby's diet consists of mostly sweet potatoes and carrots.
B. The parent has been feeding the baby orange soda.
C. The baby was in the sun too long.
D. There is no logical explanation for this coloration change.
Answer: A
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Several digestive enzymes are secreted as zymogens because ________.
A. they act only in the stomach lumen and do not digest intracellular proteins B. they can start digesting dietary proteins more quickly C. they start digesting intracellular proteins of the gastric cells more quickly D. gastric cells do not have the necessary enzymes for their synthesis E. it saves one step in their synthesis
Enlargement of the thyroid gland is termed:
A) thyromegaly B) thryromegaly C) thryomegaly D) thiromegaly
Which occurs mainly in the small intestine?
A. Acidic chyme is neutralized. B. Gastrin is secreted. C. Bile salts are manufactured. D. Pepsinogen is activated. E. H+ is secreted from epithelial cells into the lumen.
What are caveolae?
A. can rapidly develop action potentials B. shallow invaginations of cell membrane C. relatively constant tension maintained for a period of time D. intracellular cytoskeleton E. enzyme that removes phosphate from myosin