The enzyme that directly converts NADP+ to NADPH is
A. ferredoxin.
B. NADP reductase.
C. plastocyanin.
D. RUBISCO.
E. cytochrome complex.
B. NADP reductase.
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Label 4 indicates
a. implantation. b. ovulation. c. menstruation. d. fertilization. e. primordial follicle.
What is the function of oxytocin?
a. to stimulate uterine contractions b. to stimulate the cells of the mammary glands to produce milk c. to regulate the permeability of the collecting tubules of the kidney d. to stimulate ovulation e. to stimulate the growth of the ovarian follicles
If four of the original colonists died before they produced offspring, the ratios of genotypes could be quite different in the subsequent generations. This would be an example of
A) diploidy. B) gene flow. C) genetic drift. D) disruptive selection. E) stabilizing selection.
Carrot sticks that are left in a dish of freshwater for several hours become stiff and hard. Similar sticks left in a saltwater solution become limp and soft. From this we can deduce that the freshwater is ______ and the saltwater is ________ to the cells of the carrot sticks.
A. hypotonic, hypertonic B. hypotonic, hypotonic C. hypertonic, hypotonic D. hypertonic, hypertonic