All Are Components of the Lac Operon EXCEPT

question 67

Multiple Choice

All are components of the lac operon EXCEPT:

• A) the structural genes for lacZ, lacY and lacA.
• B) the operator and promoter sequences.
• C) lacI gene.
• D) promoter for the lacI gene.
• E) all are correct.

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Definitions:

Food Chain

A sequence of organisms each dependent on the next as a source of food, illustrating the flow of energy and nutrients from one organism to another.

Kilocalories

A unit of energy measurement in food, commonly called a calorie, equal to 1,000 real calories or the energy needed to raise the temperature of 1 kilogram of water by 1°C.

Terrestrial Ecosystems

Ecosystems found on land as opposed to aquatic environments, characterized by the organisms that inhabit them and the environment they live in.

Aquifers

Underground layers of water-bearing permeable rock or materials through which groundwater can move and be stored.