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nordsb [41]
2 years ago
9

A first messenger molecule activates a receptor that stimulates enzyme a, which synthesizes 100 second messenger molecules. In t

urn, each second messenger activates only one molecule of enzyme b, which once activated, phosphorylates 100 molecules of enzyme c that each phosphorylate 75 molecules of enzyme d. In the last step, each enzyme d phosphorylates 50 transcription factors. How many transcription factors are phosphorylated in response to the first messenger binding to the receptor? how many transcription factors would be phosphorylated if one copy of the enzyme d gene were inactivated (heterozygous genotype) so that there were only half the number of functional enzyme d molecules in the cell? explain.
SAT
1 answer:
Elden [556K]2 years ago
4 0

A total of 3.75 x 10⁷ transcription factors are phosphorylated in response to the first messenger. The number of transcription factors phosphorylated if one copy of the d enzyme is inactivated is 3.7499 x 10⁷.

<h3>What is phosphorylation?</h3>

Phosphorylation is a posttranslational modification that suffers proteins during the activation of a singling pathway.

Phosphorylation is capable of activating and/or deactivating specific signaling pathways.

In this case, phosphorylation activates a molecular cascade involving the progressive phosphorylation of different substrates.

In this case,  3.75 x 10⁷ transcription factors are phosphorylated in response to the first messenger (100 x 100 x 75 x 50 = 3.75 x 10⁷), whereas the number of transcription factors phosphorylated if one copy of d enzyme is inactivated is 3.7499 x 10⁷ (3.75 x 10⁷ - 50).

Learn more about phosphorylation here:

brainly.com/question/19578076

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Which statement best describes how chemical equations demonstrate conservation of mass?
scoray [572]

Answer:

Explanation:

Let's just get the answer and then show why the others are wrong.

The answer is C.

The number of reactants and Products need not be the same

C3H8 + 5O2 ===> 3CO2 + 4H2O

The reactants = 1 + 5 = 6

The products = 3 + 4 = 7

So A is incorrect.

================

B is saying that

C3H8 + 5O2 ===> C3H8 + 5O2

The answer is obviously not B

======================

C8H18(l) + O2(g) ==> CO2(g) + H2O(g)      unbalanced

Gasoline is a liquid. All the rest are gases. D is wrong.

=================

C is correct

The left side has

3 Cs

8 Hs

and 10 Os

The right side has

3Cs

8Hs

10 Os

3 0
3 years ago
To be fully prepared for a speech, a student should memorize their speech one week in advance and practice three times everyday.
pantera1 [17]

That statement is false

There are other methods that people can for the speech other than memorizing it. Here are two methods that you can use :

- Preparing a text so you can conduct the speech by reading it.

- Preparing a couple of pointers in your hand to help you remember the important topics of the speech.

8 0
3 years ago
what is the purpose of this dialogue? to foreshadow a love scene to describe the setting to help build suspense to provide comic
kap26 [50]

The purpose of the dialogue between old Capulet and Lady Capulet is to: provide comic relief.

<h3>What is Comic Relief?</h3>

Comic relief can be described as an emotional tension that produces a relief by the interference of comic episode, especially of a drama.

The dialogue that ensued where Capulet requested for a sword, and instead, was offered a crutch by Lady Capulet, produces a comic relief in the drama.

Learn more about comic relief on:

brainly.com/question/361955

#SPJ1

6 0
2 years ago
Can someone help me plzzz!
Paul [167]
The answer is B and C. Hope this helps!
5 0
2 years ago
Read 2 more answers
Lily needed to get her computer fixed. She took it to the repair store. The technician at the store worked on the computer for 3
Oxana [17]
Answer
x = 59.5
Explanation
Based on the given conditions, formulate:
Rearrange unknown terms to the left side of the equation:
Calculate the sum or difference:
Divide both sides of the equation by the coefficient of variable:
Calculate the product or quotient x = :59.5
Answer x = 59.5
3 0
2 years ago
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