Which of the following steps in glycolysis occurs last?
A. Input of 2 ATP molecules
B. Phosphorylation of glucose to form glucose-6-phosphate
C. Production of ATP from phosphoenolpyruvic acid
D. Oxidation of glyceraldehyde-3-phosphate
E. Cleavage of fructose 1, 6 diphosphate
Answer: C
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As blood is pumped into the arterial trunks past the semilunar valves, it
A. pushes against the cusps, forcing the valves open. B. fills the cusps, causing them to expand and open up for the flow of blood. C. fills the cusps, causing them to expand and block the backflow of blood. D. pushes against the cusps, forcing the valves closed. E. None of these answers is correct.
The first step in oogenesis is when a
A. secondary oocyte divides to form a polar body and an egg cell. B. primary oocyte divides to form a secondary oocyte and a first polar body. C. corpus luteum becomes a corpus albicans. D. follicle becomes a corpus luteum.
Match the hormone with its appropriate function.A. Stimulates synthesis of thyroid hormonesB. Increases adrenal cortex secretionsC. Development of immune systemD. Milk productionE. Decreases blood Ca2+ levelsCalcitonin
Fill in the blank(s) with the appropriate word(s).
Abnormalities found on a(n) ________ may signify disturbances in the ability of neurons to communicate properly.
A. magnetic resonance image B. positron-emission tomograph C. electroencephalogram D. computed tomograph scan