Hydrogen sulfide production is assayed by growth in a medium containing ferric iron (Fe3+)

Indicate whether the statement is true or false.


Answer: TRUE

Biology & Microbiology

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In a DNA double helix, each loop of the helix

a. is wound around histone proteins. b. consists of 10 nucleotides. c. always contains equal amounts of G and T. d. contains the sugar-phosphate backbones in the interior of the helix. e. represents one nucleotide.

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A(n) ________ is a diagram in which blocks represent each trophic level

Fill in the blank(s) with correct word

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Assume the Na+ is being transported across a membrane via facilitated diffusion. Which of the following conditions would allow for the most transport of Na+ across the membrane?

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The chloroplast ATP synthase

A) transports H+ ions from the stroma to the thylakoid space. B) is a nucleic acid complex. C) helps transport H+ against the concentration gradient. D) is embedded in the inner membrane of the chloroplast. E) couples the flow of H+ to the phosphorylation of NADP+.

Biology & Microbiology