In a Study Examining the Effect of Room Illumination (Low

question 43

Multiple Choice

In a study examining the effect of room illumination (low, medium, high) and room temperature (cold, warm, hot) on test performance, how many main effects are possible?

• A)2
• B)3
• C)6
• D)9

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Definitions:

Repressor

A protein that binds to specific DNA sequences, preventing the transcription of certain genes and thereby controlling gene expression.

Promoter

A region of DNA that initiates transcription of a particular gene, typically located near the transcription start sites of genes.

Inducer

A molecule that binds to a repressor protein, converting it to its inactive form, which is unable to prevent transcription.

Lactose

A disaccharide sugar found in milk and dairy products, which is broken down into glucose and galactose by the enzyme lactase.