Which of the following represents the possible genotype(s) resulting from a cross between an
individual heterozygous (Bb) and one that is homozygous (bb)?
a. BB and Bb
b. Bb and bb
c. BB only
d. Bb only
e. bb only
B
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Coupled reactions are reactions in which an
A. exergonic reaction drives a spontaneous reaction. B. exergonic or endergonic reaction provides products not used for other reactions. C. exergonic reaction drives an endergonic reaction. D. endergonic reaction drives a spontaneous reaction. E. endergonic reaction drives an exergonic reaction.
Respond to statements 121–125 with reference to the five
components of the gastrointestinal tract listed below. a. stomach b. gallbladder c. small intestine d. appendix e. large intestine D 121. It has no function in human digestion, but it does in other animals. D 122. This organ absorbs about 95 percent of the water that enters the human body, either as fluids or as part of food being eaten. M 123. Enzymatic digestion of proteins occurs primarily in this organ. E 124. Bile salts, bile pigments, cholesterol, and lecithin are stored by this organ. E 125. The digestion of cellulose occurs in this part of the digestive system of the pronghorn antelope.
When blood oxygen decreases, what hormone increases red blood cell synthesis by stem cells in the bone marrow?
A. Erthropoietin b. Aldosterone c. Renin d. Antidiuretic hormone (ADH)
Due to negative feedback mechanisms, high levels of thyroxine in the blood decrease the
A) release of TSH. B) metabolic rate. C) growth rate. D) rate of cell division. E) rate of insulin production.