If a Particular Operon Encodes Enzymes for Making an Essential

question 72

Multiple Choice

If a particular operon encodes enzymes for making an essential amino acid and is regulated like the trp operon, then

• A) the amino acid inactivates the repressor.
• B) the enzymes produced are called inducible enzymes.
• C) the repressor is active in the absence of the amino acid.
• D) the amino acid acts as a corepressor.
• E) the amino acid turns on transcription of the operon.

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Definitions:

Withdrawals

Amounts of money taken out from a business by its owner(s) for personal use, not considered business expenses.

Credit Side

The right side of an accounting ledger where increases in liabilities, equity, and income or decreases in assets and expenses are recorded.

Equipment

Tangible property used in the operation of a business that is not intended for sale, typically having a useful life longer than one year.

Credit Side

The right side of a financial ledger, where increases in liabilities, equity, and revenue, and decreases in assets and expenses are recorded.