Which of the Following Mechanisms Is Most Directly Responsible for Controlling

question 52

Multiple Choice

Which of the following mechanisms is most directly responsible for controlling circadian rhythms in plants?

• A) periodic oscillations of light and dark
• B) periodic oscillations of gene transcription
• C) a free-running period of 24-hours
• D) changes in temperature that correlate with light and dark

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Definitions:

Monobrominated Product

A chemical compound resulting from the substitution of a hydrogen atom in an organic molecule with one bromine atom.

3-Methylpentane

3-Methylpentane is a branched-chain alkane with the formula C6H14, used as a reference compound in the study of hydrocarbon structures and reactions.

Major Organic Product(s)

The predominant products formed in an organic chemical reaction, typically favored under the reaction conditions used.

Secondary Hydrogens

Hydrogen atoms attached to a secondary carbon, which is a carbon atom connected to two other carbon atoms in an organic molecule.