Diagnosing a disease involves determining the
A. negativity of the feedback.
B. multiple side effects of a drug.
C. effector and the set point.
D. cause of the homeostatic imbalance.
Answer: D
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Suppose there was a drug that could dramatically decrease mucus secretion. Which of the following may be a side effect of this drug?
A. Decreased mucus secretion would not affect a person's special senses. B. Decreased mucus secretion would enhance a person's ability to smell due to less of a barrier between the odors and the olfactory organ. C. Decreased mucus secretion would also decrease a person's ability to smell due to less fluid associated with the olfactory organ. D. Decreased mucus secretion would enhance a person's sense of taste due to the lack of mucus blocking access to the taste receptors.
Blood from the face and scalp is drained by the
A) subclavian vein. B) cephalic vein. C) external jugular vein. D) superior vena cava.
The organelles that are the “power plants” of the cell are the:
a. ribosomes b. mitochondria c. Golgi apparatus d. centrioles
In polygenic inheritance,
A) phenotypic characteristics are always controlled by genes on a single chromosome. B) phenotypic characteristics are determined by interactions among several genes. C) phenotypic characteristics are determined by the genes on the Y chromosome. D) phenotypic characteristics are determined by a single pair of alleles. E) phenotypic characteristics are determined by the action of a single gene.