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Citrus2011 [14]
3 years ago
15

The lactose repressor protein ________. a. is transcribed with the structural lac genes b. is activated by binding lactose c. is

inactivated by binding lactose d. requires lactose for its transcription e. None of the choices are correct.
Biology
1 answer:
cluponka [151]3 years ago
7 0

Answer:

c. is inactivated by binding lactose

Explanation:

Lactose is a sugar mostly present in milk or dairy products. It is degraded in the body by an enzyme called LACTASE. Since lactase is an enzyme (protein), it must be encoded by a structural gene (Lac gene). However, the expression of this structural gene can be inhibited by the absence of lactose.

Ideally, when lactose is present, it binds to a DNA binding protein called Lac repressor protein (inhibitor) causing the inhibitor protein to lose its shape and fall off, allowing transcription of the lac gene to occur. In other words, the presence of lactose deactivates the inhibitory function of lactose repressor protein.

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Answer:

Direct.

Explanation:

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Generally, it is an integral part of human life because individuals, organizations, and institutions rely on information systems in order to perform their duties, functions or tasks and to manage their operations effectively. For example, all organizations make use of information systems for supply chain management, process financial accounts, manage their workforce, and as a marketing channels to reach their customers or potential customers.

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8 0
3 years ago
The ______ brain pathway innervates a variety of organs, including the adrenal medulla, that results in the release of catechola
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Romashka [77]
The X trait is your answer
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4 years ago
In humans, polydactyly (more than 5 fingers and toes on each hand and foot), is inherited in an autosomal dominant manner. What
Masteriza [31]

Answer:

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According to the given information, polydactyly is an autosomal dominant trait which means that the phenotype would be expressed in both homozygous dominant and heterozygous dominant genotype.

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