When the size of a cell increases, the surface area/volume ratio
A) decreases initially and then begins to increase.
B) remains the same.
C) decreases.
D) increases initially and then begins to decrease.
E) increases.
Answer: C
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Almost all of the antibodies found in a newborn are
A. the result of infection. B. self-made. C. IgM. D. the result of passive immunity.
Which of these convert organic matter to inorganic matter by breaking down dead organisms?
A) producers B) detritivores C) decomposers D) primary consumers
Which statement about leaves is NOT correct?
A. Gas exchange occurs through tiny openings in the leaf surface called stomata. B. Vascular tissue is arranged in a net pattern in eudicots and a parallel pattern in monocots. C. In eudicots, the photosynthetic mesophyll is made up of an upper spongy layer and a lower palisade layer. D. The epidermis is covered by a waxy layer of cuticle that reduces water loss. E. Regulation of gas exchange through the leaf is the responsibility of the guard cells.
The ability of retroviruses to induce tumors is related to which enzyme?
a) Reverse transcriptase b) RNA polymerase c) DNA polymerase d) Protease