The carbon cycle makes carbon compounds continuously available in an ecosystem and delivers

A.) light energy to autotrophs.
B.) water to all organisms.
C.) carbon dioxide to animals within the ecosystem.
D.) chemical energy to organisms within the ecosystem.


Ans: D.) chemical energy to organisms within the ecosystem.

Biology & Microbiology

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All of the following are ways to determine the function of annotated genes except

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When present on the cell surface, these molecules are used as receptors

A. Teichoic acids B. Lipoproteins C. Glycocalyx D. Lipoteichoic acids E. glycoproteins

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Ruffini corpuscles respond to a light touch against the skin

Indicate whether the statement is true or false

Biology & Microbiology

You isolate a cell with the following characteristics: (1 ) no nucleus, (2 ) only a single type of organelle, and (3 ) 2 ?m in size. This cell could be a/an:

A) animal cell. B) plant cell or an animal cell. C) plant cell. D) bacterial cell or a plant cell. E) bacterium.

Biology & Microbiology