Optical tweezers can be used to ________.

A. study nucleic acids recovered from individual cells
B. help dissect individual microorganisms
C. remove structures from the surface of cells
D. All of the choices are correct.


Answer: A

Biology & Microbiology

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What is the correct order for the following events that follow a nerve impulse along a sympathetic neuron to innervate

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e. 2, 3, 4, 1, 6, 5

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Knowledge of the cell cycle has led to improved means of treating cancer. The drug 5-fluorouracil blocks the synthesis of thymine. This drugs inhibits the cell cycle at the end of

a. G1. b. G2. c. S. d. prophase. e. metaphase.

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Treating infections with gram-positive bacteria requires different drugs than those used to treat gram-negative bacteria.

a. true b. false

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Eukaryotic cells acquired mitochondria and chloroplasts by  

A.  endosymbiosis. B.  exocytosis. C.  pinocytosis. D.  mutation. E.  natural selection.

Biology & Microbiology