Which of the Following Combinations Will Produce the Highest Expression

question 58

Multiple Choice

Which of the following combinations will produce the highest expression of β-galactosidase?

• A) lacI ⁺on medium with lactose
• B) lacI^s on medium with lactose
• C) lacI⁺ on medium with no lactose
• D) lacI^s on medium with no lactose
• E) lacZ^- on medium with no lactose

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Definitions:

Hallucination

A perception of seeing, hearing, or feeling something that is not present or does not exist in the external environment.

Shadows

In a psychological context, this could refer to the unrecognized or hidden aspects of oneself.

N-methyl-D-aspartate (NMDA)

A receptor in the brain that plays a key role in synaptic plasticity, memory function, and involved in neuronal communication.

Cholinesterase

is an enzyme that breaks down acetylcholine and other choline esters that function as neurotransmitters, important in muscle function and memory.