Which of the following organelles provide additional surface area for absorption?
A. Microvilli
B. Flagella
C. Cilia
D. Centrioles
E. Ribosomes
Answer: A
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What does the inhibitor bind to during feedback inhibition?
A) neither A nor B B) either A or B, depending on the biochemical pathway C) allosteric site of the enzyme being inhibited D) active site of the enzyme being inhibited E) both A and B
Which of the following is not found in the epidermis?
A. Stem cells B. Melanocytes C. Keratinocytes D. Tactile cells E. Fibroblasts
Hypovitaminosis of vitamin B12 can cause pernicious anemia, however, hypervitaminosis can cause
A) polycythemia. B) possible lethal CNS alterations. C) hypotension. D) kidney stones. E) itching and tingling sensations.
What part of the motor pathway inhibits inappropriate movements?
A) cerebellum B) basal nuclei C) occipital lobe D) primary motor cortex