Which of the Following Statements About Regulation of the Trp

question 86

Multiple Choice

Which of the following statements about regulation of the trp operon are true? When the Trp concentration in the cell is very low, 1. ribosomes stall at Trp codons in the attenuator. 2. RNA polymerase terminates transcription of the trp operon prematurely. 3. the secondary structure of the RNA transcribed from the leader region changes. 4. enzymes which catalyze the synthesis of Trp are made in greater abundance.

• A) only 1, 2 and 3 are true
• B) only 2, 3 and 4 are true
• C) only 1, 3 and 4 are true
• D) only 1 and 3 are true
• E) all are true

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Definitions:

Proliferative Tumor

A tumor characterized by rapid cell growth and division, often indicating a malignant process.

Anterior Pituitary

The Anterior Pituitary is the front portion of the pituitary gland, producing and releasing hormones that regulate several physiological processes, including growth, reproduction, and metabolism.

Thyroid Hormone

Hormones produced by the thyroid gland, primarily thyroxine (T4) and triiodothyronine (T3), which regulate the body's metabolic rate.

TSH

Thyroid Stimulating Hormone, a pituitary hormone that regulates the production of hormones by the thyroid gland.