If an Operon Is Regulated by ____ Control, Genes Are

question 41

Multiple Choice

If an operon is regulated by ____ control, genes are ____ by a regulatory protein called a ____.

• A) positive; on unless they are switched off; repressor
• B) negative; off unless they are switched on; repressor
• C) negative; on unless they are switched off; repressor
• D) positive; off unless they are switched on; repressor
• E) positive; on unless they are switched off; activator

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Definitions:

Instruments

Tools or devices designed for a specific purpose, especially scientific or musical.

Independent Variable

The factor in a controlled experiment that is being manipulated.

Experimenter

A person who conducts scientific tests and trials to explore hypotheses and examine the effects of variables.

Manipulated

Altered or controlled in a skillful or sometimes deceitful manner, often to achieve a specific outcome.