Which of the following structures represents the yolk sac?
a. A
b. B
c. C
d. D
e. E
ANSWER: e
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Which of the following glands increases blood calcium levels?
A) thyroid B) adrenal C) parathyroid D) pituitary
Valuable substances in filtrate are returned to the blood through what process?
A) filtration B) reabsorption C) secretion D) excretion
You have recently identified a novel protein and obtained its sequence. How could you use this sequence to predict the function of the protein?
A. By looking for conserved domains. B. By using the sequence to make antibodies against the protein. C. By determining the secondary structure of the protein. D. By determining the DNA sequence that could encode the protein.
In the acute inflammatory response, which cells are the most numerous?
A) Monocytes B) Neutrophils C) Eosinophils D) Basophils