Use the Figure to Answer the Question

question 56

Multiple Choice

Use the figure to answer the question.

Refer to the metabolic pathway illustrated. If A, B, and C are all required for growth, a strain that is mutant for the gene-encoding enzyme A would be able to grow on medium supplemented with which of the following nutrient(s) ?

• A) nutrient A only
• B) either nutrient B or C
• C) nutrient C only
• D) nutrients A and C

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Definitions:

Sensory Neurons

Nerve cells responsible for converting external stimuli from the organism's environment into internal electrical impulses.

Pituitary Gland

A pea-sized gland situated at the base of the brain, vital for regulating essential body functions and general wellbeing.

Master Gland

A term often used to describe the pituitary gland due to its central role in regulating other glands and many body functions.

Hypothalamus

A small region at the base of the brain crucial for hormone production and regulation of essential bodily functions such as temperature, hunger, and sleep.