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Pepsi [2]
3 years ago
7

Chromatin structure can increase or decrease transcription of a gene according to the:

Biology
1 answer:
Luda [366]3 years ago
6 0

Answer:

D. proportion of arginine and lysine amino acids in the histone proteins.

Explanation:

Epigenetic modifications are one of the main reasons of methylation and de-methylation, acylation and de-acylation of histone proteins that trigger the transcriptional process. All of these mentioned modification causes the change in the ration of lysine and arginine residues and these are the main reasons that affect the structure of chromatin as required.

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Using the table, what is the correct mRNA sequence representing the addition of alanine and then
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Answer: B GCUCUU

Explanation:

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Answer:

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Explanation:

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3 years ago
For DNA, a plot of the change in absorbance versus temperature would be ________, which indicates ________.
Korvikt [17]

The question is incomplete. The complete question is as ollows:

For DNA, a plot of the change in absorbance versus temperature would be ________, which indicates ________.

Variable in shape (hyperbolic, linear or sigmoidal); the dependence of the denaturing process on the sequence of the DNA

Linear; the breaking of bonds between the base pairs is an independent process

Hyperbolic; a simple equilibrium between the native conformation and denatured DNA.

Sigmoidal; cooperativity where disruptions in the base stacking at one position destabilizes the stacking in neighboring base pairs

Answer:

Sigmoidal; cooperativity where disruptions in the base stacking at one position destabilizes the stacking in neighboring base pairs

Explanation:

DNA is the main genetic material of all the living organisms except in case of few viruses. DNA contains the nitrogenous bases ( adenine, guanine, thymine and cytosine), pentose sugar and phosphate bond.

The DNA can absorb light due to the presence of the absorbance property of nitrogenous bases. The shape of the plot of the change in absorbance versus temperature is sigmoidal. This is because the temperature denatures the DNA and breaks the hydrogen bond present between the nitrogenous bases. The breaking of the bonds between the nitrogenous base will disrupt the bonding at the neighboring base pair also.

Thus, the correct answer is option (4).

5 0
4 years ago
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