If You Were Given a Bacterial Strain with a Mutation

question 5

Multiple Choice

If you were given a bacterial strain with a mutation in the promoter region of the trp operon the most likely effect would be

• A)interference with RNA polymerase binding.
• B)to block the repressor from binding.
• C)derepression of the trp operon.
• D)enabling the trp operon to be expressed in the absence of tryptophan.

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Definitions:

Revenues

The total income that a business generates from its normal business activities, usually from the sale of goods and services to customers.

Expenses

Costs incurred in the running of a business operation, such as rent, utilities, and salaries.

Acetylcholinesterase

An enzyme that breaks down the neurotransmitter acetylcholine in the synaptic cleft, thereby terminating the signal between nerve cells.

Tropomyosin

A protein that runs along the length of the actin filament in muscle fibers and, along with troponin, regulates muscle contraction.