In the Gram-staining procedure, the mordant is ________.

A. alcohol
B. crystal violet
C. safranin
D. iodine


Answer: D

Biology & Microbiology

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Linus Pauling and his colleagues discovered that a mutant gene involved in the synthesis of hemoglobin causes sickle cell anemia

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If a cell's DNA becomes damaged by radiation or chemicals, it is unlikely to ____

a. pass the G2 checkpoint b. synthesize cyclin-dependent kinases c. enter G1 from mitosis d. become arrested in G1 e. activate DNA repair mechanisms

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Where is the double bond in oleic acid (between which carbons)?

a. between carbon atoms 18 and 19 b. between carbon atoms 20 and 21 c. between carbon atoms 24 and 26 d. between carbon atoms 26 and 28

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The endosymbiotic theory is supported by the work

of __________ on bacteria-infected Amoeba proteus. a. Stanley Miller b. Jeon Kwang c. Thomas Brock d. Lynn Margulis e. Australian researchers

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