What happens if MPF (mitosis-promoting factor) is introduced into immature frog oocytes that are arrested in G2?
A) Nothing happens.
B) The cells undergo meiosis.
C) The cells enter mitosis.
D) Cell differentiation is triggered.
C
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Gene amplification is the basis for ________
A) interstitial deletions B) formation of the translocation cross C) a segmental deletion D) the nucleolar organizing region E) bar-eyed flies
Why is surface area to volume ratio important
for all cells?
a. a cell must be small enough to absorb small molecules and atoms b. if a cell has too small a surface area, the surface to volume ratio will be too large c. if a cell has too large a surface area to volume ratio, the plasma membrane is not sufficient to deal with the increased amount of cytoplasm d. surface area to volume ratios are only important for small cells, like bacteria e. more than one of these is correct
The major divisions of the peripheral nervous system are the ____.
A. somatic and autonomic systems B. sympathetic and parasympathetic systems C. peripheral and central systems D. afferent and autonomic systems E. cranial and skeletal nerves
At which phase of the cell cycle are sister chromatids generated?
A) G0 B) G1 C) G2 D) S E) M