How is the activity of a riboswitch controlled?

A) by other riboswitches
B) metabolite binding can change its structure
C) sigma factor binding alters its structure
D) small RNA complementary binding disrupts its function


Answer: B

Biology & Microbiology

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Which of the following represents the activation energy needed for the enzyme-catalyzed reverse reaction, C + D ? A + B, in the figure?

A) a B) b C) c D) d E) e

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Sweating to keep cool in the summer is the result of ____

a. hydrogen bonds breaking to release energy b. hydrogen bonds forming, which requires energy c. evaporation of water giving off energy d. cohesion of water molecules giving off energy e. cohesion of water molecules requiring energy

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The maximum sustainable population size for the prevailing environment is called the ________ capacity

Fill in the blank(s) with correct word

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Because archaea were first found in environments that lacked oxygen or were very hot, acidic, or salty, they were nicknamed "extremophiles."

a. true b. false

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