GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Two strands of DNA are held together by -
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covalent bonds
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hydrogen bonds
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electrostatic force
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van der Waals’ forces
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Explanation:
Detailed explanation-1: -The 2 strands of DNA are held together by hydrogen bonds between N2 bases.
Detailed explanation-2: -Answer and Explanation: The answer is B: hydrogen bonds are easier to break allowing for DNA copying. Hydrogen bonds formed between complementary base pairs on opposite DNA strands form the “rungs on a ladder” portion of DNA’s double-helical structure.
Detailed explanation-3: -The two strands of a DNA molecule are held together by hydrogen bonds between their base pairs. The base pairs refer to the nitrogenous bases found in the interior of DNA: adenine, cytosine, guanine, and thymine.
There is 1 question to complete.