"K" is the elemental symbol for

A. copper.
B. potassium.
C. krypton.
D. nickel.
E. phosphorus.


B. potassium.

Biology & Microbiology

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Where do the molecules used as the inputs of the Calvin cycles (ATP and NADPH) come from?

A. They come from previous Calvin cycles. B. They come from the air. C. They come from the light reactions. D. They come from the sun.

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Septicemia is only caused by Gram-negative bacteria

Indicate whether this statement is TRUE or FALSE.

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Which of the following describes a gametangium?

a. the structure in which gametes are produced b. a type of haploid plant that produces gametes c. the growing point at the tip of a shoot d. the structure responsible for water transport

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Matter is composed of:

A. molecules B. atoms C. mass D. energy

Biology & Microbiology