The enzyme nitrogenase is rather unique, as it specifically functions in the:a

absence of oxygen.
b. absence of nitrogen.
c. absence of carbon dioxide.
d. presence of oxygen.
e. presence of carbon dioxide.


a

Biology & Microbiology

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The Army and the Environmental Protection Agency

are decreasing the contamination at the Army’s Aberdeen Proving Grounds by a. removing contaminated soil. b. planting hybrid poplar trees. c. chemically degrading the contaminants. d. covering the contaminated soil with a sealant. e. doing none of these.

Biology & Microbiology

Bacterial microcompartments, or BMCs are filled with enzymes designed to work together in pathways.

a. true b. false

Biology & Microbiology

In _______, neither allele is dominant over the other. In such a case, a heterozygous individual will produce both phenotypes side-by-side.

a) incomplete dominance b) codominance c) complete dominance d) simple dominance

Biology & Microbiology

Assume that a cross is made between tall and dwarf tobacco plants. The F1 generation showed intermediate height, while the F2 generation showed a distribution of height ranging from tall to dwarf, like the original parents, and many heights between the

extremes. These data are consistent with which one of the following modes of inheritance? A) hemizygosity B) codominance C) multiple-factor inheritance D) alternation of generations E) incomplete dominance

Biology & Microbiology