When Arginine Is Added to a Culture Growing Exponentially in a Medium

question 75

Multiple Choice

When arginine is added to a culture growing exponentially in a medium without arginine,what occurs?

• A) All cellular growth ceases.
• B) Growth continues, but the production of enzymes required for the synthesis of arginine ceases.
• C) Growth continues, but the production of enzymes required for the synthesis of arginine increases.
• D) The cell returns to the lag stage of growth to synthesize the proteins necessary for the metabolism of arginine.

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Definitions:

Gamma Motor Neurons

Neurons that control the contraction of intrafusal muscle fibers in muscle spindles, helping to regulate muscle tone and sensitivity of stretch reflexes.

Muscle Spindle

A sensory receptor located within muscles that detects changes in muscle length, contributing to the sense of body position.

Action Potentials

Rapid and temporary changes in the electrical membrane potential of a cell, allowing for the transmission of nerve impulses along neurons.

Golgi Tendon Organs

Sensory receptors located at the junction of tendons and muscles, sensitive to changes in muscle tension.