It is impossible for sperm to be functional (able to fertilize the egg) until after ________
A) the tail disappears
B) they have been stored in the uterus for several days
C) they become spermatids
D) they undergo capacitation
D
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Which of the following labels best matches osteocyte?
A) stem cell B) dissolves matrix C) mature bone cell D) secretes organic matrix E) immature bone cell
These structures prevent prolapse of the atrioventricular valves.
A. Chordae tendineae B. Crista terminalis C. Trabeculae carneae D. Intercalated discs
Potassium has a higher concentration
A. outside the cell versus inside the cell, whereas sodium has a higher concentration inside versus outside the cell. B. inside the cell versus outside the cell, and sodium is also more concentrated inside versus outside the cell. C. inside the cell versus outside the cell, whereas sodium has a higher concentration outside versus inside the cell. D. outside the cell versus inside the cell, and sodium is also more concentrated outside versus inside the cell.
________ are stronger than steel when stretched
A) Lamellae B) Collagen fibers C) Mesenchymal cells D) Hydroxyapatite cells E) Lacunae