Match the term on the left with its definition or description on the right.

A) energy from carbon, carbon from sunlight
B) electron donor is water
C) energy from sunlight, carbon from organic sources
D) electron donor is carbon dioxide
E) energy from sunlight, carbon from CO2
F) light-dependent generation of NADPH
G) use electron donors such as sulfide and thiosulfate

1) photoreduction
2) photoheterotrophs
3) photoautotrophs
4) oxygenic phototrophs
5) anoxygenic phototrophs


1. F) light-dependent generation of NADPH
2. C) energy from sunlight, carbon from organic sources
3. E) energy from sunlight, carbon from CO2
4. B) electron donor is water
5. D) electron donor is carbon dioxide

Biology & Microbiology

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Answer the following statement true (T) or false (F)

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The most effective form of penicillin is

A. A. B. B. C. E. D. G.

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The binding site for an antigen is located in which region of an antibody?

1.Between the variable region of the light chain and the variable region of the heavy chain. 2.Between the variable region and the constant region of the light chain. 3.Between the variable region and the constant region of the heavy chain. 4.Between the constant region of the light chain and the constant region of the heavy chain.

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Which of the following human diseases may result from exposure to soil containing the microbe responsible?

A) blastomycosis B) giardiasis C) crown gall disease D) cryptosporidiosis E) saxitoxin poisoning

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