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Which of the following statements about the structure of DNA molecules is true?

ID: 166462 • Letter: W

Question

Which of the following statements about the structure of DNA molecules is true?

There are three hydrogen bonds between AT pairs.

The nucleotides are arranged in a linear, unbranched pattern.

The sugar-phosphate backbone runs the same way on each DNA strand.

A, B, and Z-form DNA are all right handed helixes.

The nitrogenous bases are found on the outside of the molecule.

a.

There are three hydrogen bonds between AT pairs.

b.

The nucleotides are arranged in a linear, unbranched pattern.

c.

The sugar-phosphate backbone runs the same way on each DNA strand.

d.

A, B, and Z-form DNA are all right handed helixes.

e.

The nitrogenous bases are found on the outside of the molecule.

Explanation / Answer

Ans c sugar phosphate backbone runs the same way on each DNA strand

They are alternating grey and dark grey patterns that join together nucleotides in DNA

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