Why do chemical reactions tend to speed up when the concentration of the reactants is increased?

A) The reactants move faster.
B) The reactants collide more often.
C) The reactants have greater energy.
D) All of the listed responses are correct.


Answer: B

Biology & Microbiology

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The trigger for a fixed action pattern is called the ____

Fill in the blank with the appropriate word.

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In the production of transgenic plants, what selectable marker is most commonly used to indicate that a cell has taken up the T DNA that includes the cloned gene?

A. Ampicillin B. Neomycin C. Streptomycin D. Kanamycin

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The genetic code demonstrates the universality of living things because it is common to virtually all:a

eukaryotes. b. autotrophs. c. plants and animals. d. bacteria. e. organisms

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Which of the following procedures would be used to introduce DNA into a single mouse cell?

A) Southern blotting B) electroporation C) gene gun D) microinjection E) protoplast fusion

Biology & Microbiology