Which Is Least Likely to Occur in a Non-Mutant Bacterial

question 143

Multiple Choice

Which is least likely to occur in a non-mutant bacterial cell?

• A)  -galactoside transacetylase is present at a high concentration when  -galactoside is present at a low concentration.
• B)  -galactoside transacetylase is produced at very low levels in the absence of lactose.
• C)  -galactoside transacetylase is produced at very low levels when glucose is abundant.
• D)  -galactoside transacetylase is produced at high levels when lactose is at a high concentration and glucose is not available.
• E)  -galactoside transacetylase and β-galactoside are both present in very low concentrations.

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Definitions:

Semantic Memory

A person’s knowledge about the world.

Atkinson-Shiffrin Theory

Theory stating that memory storage involves three separate systems: sensory memory, short-term memory, and long-term memory.

Lifetime

The duration of existence of an individual or the period during which something is functional or valid.

Long-term Memory

A type of memory that can store an unlimited amount of information for a potentially indefinite length of time.