Which component is a microfilament of the cytoskeletons? A) A B) B C) C D) D E)

Question

Which component is a microfilament of the cytoskeletons? A) A B) B C) C D) D E) E. At which phase(s) is it preferable to obtain chromosomes to prepare a karyotype? A) late anaphase or early telophase B) late prophase or metaphase C) anaphase D) early prophase E) late telophase The final electron acceptor of the electron transport chain that functions in aerobic oxidative phosphorylation is A) pyruvate. B) water. C) ADP. D) NAD^+ E) oxygen. Water passes quickly through cell membranes because A) it is a small, polar, charged molecule. B) the bilayer is hydrophilic. C) water movement is tied to ATP hydrolysis. D) it moves through aquaporins in the membrane. F) it moves through hydrophobic channels. Which of the following does not occur during mitosis? A) replication of the DNA B) separation of sister chromatids C) separation of the spindle poles D) spindle formation E) condensation of the chromosomes

Explanation / Answer

16.D Water can also pass through the membrane through channel proteins called aquaporins (AQP).

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