Choose the letter of the best match from the following:A. nitrogenB. calciumC. potassiumD. phosphorusE. magnesiumContained in amino acids, proteins, nucleic acids, chlorophyll.

Fill in the blank(s) with the appropriate word(s).


A

Nitrogen is an important element in amino acids, nucleic acids and chlorophyll.

Biology & Microbiology

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The ____ are respiratory structures composed of moist evaginations

a. tracheal tubes b. lungs c. gills d. skin e. nasal passages

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What kind of fruit is formed from the fusion of individually pollinated flowers?

a. aggregate b. simple c. multiple d. fleshy e. dry

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Glaucoma is most often an age-related, painless, and chronic disease, with slowly developing symptoms.

a. true b. false

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The average number of children born to a woman during her lifetime is known as:

a. age structure. b. replacement-level fertility. c. natality. d. total fertility rate. e. infant mortality rate.

Biology & Microbiology