Which of the Following Statements About Phytochrome P_r is True

question 84

Multiple Choice

Which of the following statements about phytochrome P_r is true?

• A) It absorbs green light.
• B) It looks red in a test tube.
• C) It is the active form of phytochrome.
• D) It converts spontaneously to the other form in the dark.
• E) It controls a variety of plant responses.

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Definitions:

Substrate-Level Phosphorylation

ATP formation by the transfer of a phosphate group from a phosphorylated molecule to ADP.

Glycolysis

Set of reactions that convert glucose to two pyruvate for a net yield of two ATP and two NADH.

Phosphate Group

A functional group consisting of a phosphorus atom bonded to four oxygen atoms, crucial in the structure of DNA and energy transfer.

Antioxidant Molecules

Compounds that prevent oxidation, a chemical reaction that can produce free radicals and thus damage cells.