The Genes That Control Lactose Utilization (Its Uptake and Degradation)in

question 14

Multiple Choice

The genes that control lactose utilization (its uptake and degradation) in bacteria are arranged sequentially in the bacterial chromosome under the control of a single promoter sequence.This arrangement of genes is called a(n)

• A) operator.
• B) exelon.
• C) operon.
• D) promoton.

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Definitions:

Absolute Thresholds

The minimum intensity of a stimulus that one can perceive at least 50% of the time.

Colour Hue

The quality of a color determined by its dominant wavelength, making it distinguishable as red, green, blue, etc.

Light Wave

An electromagnetic wave visible to the human eye, responsible for the perception of light and color.

Wavelength

The distance between successive crests of a wave, often used to describe the properties of light and sound waves.