BIOLOGY HIGH SCHOOL

What are the roles of allolactose in the lac operon and tryptophan in the trp operon?

Answers

Answer 1
Answer: The answer is allolactose is an inducer while tryptophan is corepressor in the trp operon.

The trp operon is a group of genes transcribed together that code for the synthesis of tryptophan (trp). It is present in many bacteria.
In the trp operon, allolactose binds to and deactivates Lacl. Since LacI is the repressor of the lac operon genes, its deactivation allows the lac operon transcription. Therefore, allolactose is the inducer.
In the trp operon, tryptophan binds to and activates TrpR. Since TrpR is the repressor of the trp operon, its activation stops the trp operon transcription. Therefore, tryptophan is the repressor.
Answer 2
Answer:

What are the roles of allolactose in the lac operon and tryptophan in the trp operon?


The function of allolactose in regulation of the lac operon is that the allolactose acts as an inducer. Tryptophan acts as a corepressor that causes the trp repressor to bind to the trp operon and repress transcription.


Answer: A) allolactose acts as an inducer and tryptophan acts as a corepressor.


I hope it helps, Regards.

Related Questions

What is the primary purpose of photosynthesis?
In experiments testing the cocktail party effect, most participants were unable to do any of the following except _____________.A. detect when the speaker’s voice changed from male to female B. identify any phrase associated with the unattended information C. detect when the unattended language was changed to German D. notice specific changes when the unattended speech was played backward
Which types of rna are involved in protein synthesis?
Describe the meaning of leukemia,its causes and concequences and how it can be treated
Exons of a gene are defined as (A) the untranslated regions of the corresponding mRNA (B) regions in the corresponding mRNA that are involved in initiation of transcription (C) regions that are not transcribed by RNA polymerase (D) regions that are excised from the corresponding protein after it is synthesized (E) regions that remain in the corresponding mRNA after splicing

Type 2 diabetesa. Usually requires treatment with insulin injections.
b. Is seldom seen in adults.
c. Is the most common form of diabetes.
d. Is described by none of the above.

Answers

seldom seen in adults treatment with insulin injections

Organs are comprised of tissues that work together to perform a specific bodily function. a. True
b. False

Answers

True , several tissues works togather to form an organ
TRUE i know this for a fact 

Veins contain a network of valves to insure a one-way flow of blood but arteries do not. This is because veins must counteract the force of _______ on blood flow

Answers

The answer is Gravity. To ensure the one-way flow of blood the veins contain a network of valves which arteries do not have. The reason is for the veins to counteract the force of gravity on flow of blood. For example, to increase the pressure of the blood back to the heart the veins must counteract the force of the gravity.

 

Answer: A)  gravity  

Explanation: I Took The Pre-Test On US Test Prep.

Why did Mendel continue some of his experiments to the F₂ or F₃ generation? A) to obtain a larger number of offspring on which to base statistics
B) to observe whether or not a recessive trait would reappear
C) to observe whether or not the dominant trait would reappear
D) to distinguish which alleles were segregating
E) to be able to describe the frequency of recombination

Answers

Mendel continued some of his experiments to the F2 or F3 generation to observe whether or not a recessive trait would reappear. 

What would happen if cytokinesis took place before mitosis?

Answers

If cytokinesis happened first, the chromosomes would not have replicated and the resulting daughter cells wont be the correct ploidy

What is gas exchange

Answers

Answer

Gas exchange is the delivery of oxygen from the lungs to the bloodstream

Explanation:

It occurs in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.

write it in your own words, also can i have brainliest

Answer:

XD....

Explanation:

Gas exchange is the physical process by which gases move passively by diffusion across a surface.

Other Questions
Binary fission in a sentence
If a local anesthetic blocks neural transmission what hormones would be affected and in what direction (up or down) if the anesthetic is applied to the infundibula stalk below the hypothalamus. What would be the short-term acute effects on the body?
Water harvesting, the collection of rainfall and run off for future use, has been practiced for thousands of years; but in some regions where it was previously used it has been forgotten. In countries facing huge problems with land erosion due to runoff, governments have been encouraging the implementation of this technique. The implementation is important for more than pervention of water erosion . What other benefit might water harvesting have in these areas
Describe the trend for mushroom yield as the concentration of heavy metals in the soil is increased.