Which Statement Is False About Most Metabolic Pathways

question 53

Multiple Choice

Which statement is false about most metabolic pathways?

• A)Most pathways are reversible under physiological conditions.
• B)Pathways serve to increase the efficiency of energy transfers.
• C)The rates of pathway reactions vary to respond to changing conditions.
• D)The enzymes that catalyze reactions in metabolic pathways generally catalyze only a single step.

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Definitions:

Chemoreceptors

Sensory receptors in organisms that detect chemical stimuli in the environment, playing a key role in taste and smell.

Gustation

The sense of taste, or the act of discerning flavors through receptors in the mouth.

Olfaction

The sense of smell, a chemical sense in which odorants are detected by olfactory receptors.

Retina

The light-sensitive layer of tissue at the back of the inner eye, which converts light into electrical signals sent to the brain via the optic nerve.