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babunello [35]
3 years ago
13

Which one of the following accurately describes the Lac operon?

Biology
1 answer:
andre [41]3 years ago
5 0

The lac operon, which stands for Lactose operon is known as an inducible system. It is the an operon required for the transport and metabolism of lactose some enteric bacteria (Echerichia coli for example). The Lac operon is only activated in the presence of a key molecule. The key molecule is lactose.
From the given options the following best describes the Lac operon:

D. The repressor is freed from the operator when lactose is present.

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Features that increase the likelihood of survival and reproduction by an organism in a particular environment are called
dexar [7]

Answer: Adaptation

Explanation:

The adaptation can be defined as the biological mechanism that makes the organisms suitable to survive in the changing environment. The adaptation can be done at the genetic, molecular, physiological and structural level all these adaptations increases the likelihood of survival of the organisms and increases their rate of reproduction. The beneficial traits acquired due to adaptation are passed from parents to their offspring. Thus the adaptation becomes profound and observable in living beings.

8 0
3 years ago
Which of the statements are true? Yeast cells that produce more unsaturated fatty acids than saturated fatty acids in response t
Feliz [49]

Answer:1)Yeast cells that produce more unsaturated fatty acids than saturated fatty acids in response to cold have greater cold tolerance

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5 0
3 years ago
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lara31 [8.8K]
S phase
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4 0
2 years ago
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8 0
3 years ago
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Igoryamba

Answer:

Option-A

Explanation:

Pentose phosphate pathway is the alternative pathway taking place in both eukaryotes and prokaryotes parallel to the glycolysis.

The pentose phosphate pathway forms the electron carriers called NADPH and the ribose-5 phosphate.

The NADPH is formed in large amounts through this pathway which contains a very high amount of energy. NADPH can donate its hydride ions, therefore, it can be involved in the reaction where it can donate energy in the form of hydrogen and electron.

The NADPH is therefore involved in the formation of reducing biosynthetic pathways like fatty acid synthesis, cholesterol synthesis, and bile acid synthesis.

Thus, Option-A is the correct answer.

8 0
3 years ago
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