During what phase of mitosis do the chromosomes form a line along the equator of the cell?
A. Metaphase
B. Telophase
C. Prophase
D. Anaphase
Answer: A
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One of the standard tests of a newborn infant is to stroke the inside of its thigh to elicit the cremaster reflex. What would be the response you would expect to see?
A) twitching of the skin in the hypogastric region B) closing of the labia C) contraction of the dartos muscle D) penile rigidity E) testicular retraction
Which of the following is an effect of the transporters in the proximal tubules?
A) secretion of potassium B) reabsorption of bicarbonate C) secretion of sodium D) secretion of urea E) reabsorption of hydrogen
The pulmonary semilunar valve is to the right ventricle as the ________ is to the ________.
A. right atrioventricular valve; left ventricle B. aortic valve; aorta C. mitral valve; pulmonary vein D. tricuspid valve; right atrium
Neural stem cells can be harvested from autopsies and stored, alive, in banks, whereas neurons cannot, because
A. neural stem cells have more globular shapes than neurons. B. neural stem cells have lower oxygen and energy requirements than neurons. C. neural stem cells have higher oxygen and energy requirements than neurons. D. people do not will them to science.