Which is not a component of nucleic acids?

A. sulfur
B. pentose sugar
C. organic nitrogenous base
D. phosphate


Answer: A

Biology & Microbiology

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An organism that is heterozygous for two traits can produce a maximum of _______ different gametes for these traits.

A. 2 B. 4 C. 2; if they are on the same chromosome D. 4; only if they are on different chromosomes E. 8

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It is possible to build a light microscope capable of 10,000× magnification, but the image would not be sharp because resolution is independent of magnification.

Answer the following statement true (T) or false (F)

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ADH makes the walls of the collecting duct more permeable to water

____________________ Indicate whether the statement is true or false.

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During exercise, the blood returning to a person's heart contains hemoglobin that is about ________ saturated.

A. 97% B. 35% C. 3% D. 75% E. 22%

Biology & Microbiology