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.
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All of the following are ways to determine the function of annotated genes except
a. looking for similar gene sequences of known function b. examining the putative protein structure c. gene knockout experiments d. gene knockdown experiments e. finding a pseudogene for that gene
When present on the cell surface, these molecules are used as receptors
A. Teichoic acids B. Lipoproteins C. Glycocalyx D. Lipoteichoic acids E. glycoproteins
Ruffini corpuscles respond to a light touch against the skin
Indicate whether the statement is true or false
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.