A(n) ________ is a substance that accepts hydrogen ions or, when it dissociates in water, will give off hydroxide ions

Fill in the blank(s) with correct word


base

Biology & Microbiology

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While the gene encoding the small subunit of ribosomes was used to generate the universal tree of life,

many genes are inappropriate choices for this analysis because horizontal gene transfer has occurred for billions of years between the ancestors giving rise to all three domains. A. true B. false

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Extinction is most likely an example of ____

a. microevolution b. macroevolution c. orthogenesis d. uniformitarianism e. gradualism

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What color develops when ninhydrin reacts with amino acids in a sample?

a. Blue b. Blue-green c. Purple d. Red

Biology & Microbiology

Maturation of T cells occurs in the

A. lymph nodes. B. Peyer's patches. C. spleen. D. thymus. E. bone marrow.

Biology & Microbiology