Nitrogen is a growth-limiting nutrient for many organisms because
A) it is necessary for the biosynthesis of amino acids.
B) it is required for synthesis of nucleotides.
C) it is required for lipid synthesis.
D) only a small number of bacteria are able to extract it from the atmosphere.
E) only a few microbes can extract it from the atmosphere, but all organisms require it for amino acid and nucleotide synthesis.
E
Bloom's Taxonomy: Comprehension
Section: Growth Requirements
Learning Outcome: 6.5
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How did Meselson and Stahl distinguish between semiconservative and dispersive replication in their experiment?
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Both, Enterotoxins and Toxic Shock Syndrome Toxins produced by Staphylococcus aureus are considered super antigens.
a. true b. false