An important inorganic nutrient needed by marine photosynthetic organisms is:

a. glucose.
b. amino acids.
c. lipids.
d. nitrates.
e. carbohydrates.


D

Biology & Microbiology

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Sigma factor belongs to a general group of proteins called the transcription factors

Indicate whether the statement is true or false

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At what level of biological organization does evolution take place?

A. community B. organism C. ecosystem D. population

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A lack of ozone is dangerous because ozone

A. cools the Earth. B. filters out dangerous ultraviolet rays. C. triggers the development of clouds. D. is a reserve for oxygen that we breathe.

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Phytoplankton consists of tiny animals that swim through ocean water

a. true b. false

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