A chemical that you are working with has the elements carbon, hydrogen, oxygen, nitrogen, and phosphorus. In addition, ribose sugar is within its structure. What kind of compound is this molecule?
A) carbohydrate
B) lipid
C) protein
D) salt
E) nucleic acid
E) nucleic acid
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If the secretion of a hormone is decreased when the blood concentration of a substance whose production is stimulated by the hormone increases, the mechanism of control is called
Hemoglobin's affinity for oxygen when the BPG level is high is
A) greater than hemoglobin's affinity for oxygen when the BPG level is low. B) less than hemoglobin's affinity for oxygen when the BPG level is low. C) equal to hemoglobin's affinity for oxygen when the BPG level is low. D) equal to hemoglobin's affinity for oxygen when pH is low. E) equal to hemoglobin's affinity for oxygen when pH is high.
The hormone that reduces the amount of water in the body is:
a. ADH b. aldosterone c. ANH d. both A and B above
Two groups of people were tested to determine whether garlic lowers blood cholesterol levels. One group was given 800 mg of garlic powder daily for four months and exhibited an average 12% reduction in the blood cholesterol. The other group was not given any garlic and after four months averaged a 3% reduction in cholesterol. The group that was not given the garlic was the ________ group.
A. test B. peer C. control D. treatment E. double-blind