Why is the structure of a nucleosome so important? A. It allows DNA to fit in the nucleus.
B. It helps the DNA exit the nucleus.
C. It tangles the chromatin.
D. It replicates the DMA.​

Hi, I'm going to say A since The DNA supercoils itself with the help of various proteins to get a compressed shape so that it can fit and be packaged inside the nucleus of the cell.

Please correct me if I am wrong :)

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Explanation:

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explanation:

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answer-

the statement that f(x) = |x+a| + b has exactly one x-intercept is sometimes correct.

solution-

it solely depends on b, whether the function will have one or two or zero x intercept.

this plot of the given function, f(x) = |x+a| + b will be the basic absolute value graph i.e v shape, with vertex translated to (-a, b), instead of origin.

1-   if b is zero, the graph will have exactly one x-intercept, at x= -a

2- if b is positive, the whole graph will be above the x-axis, hence it will have no x-intercepts.

3- if b is negative, the graph will be below the x-axis, hence it will have two x-intercepts.

∴ the statement is sometimes true.