BIOLOGY
STRUCTURE OF PROTEINS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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strong bonds
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weak bonds
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deoxyriose
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phosphate
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Detailed explanation-1: -Hydrogen bond (H-bond) binds the nitrogen bases between the two strands of DNA.
Detailed explanation-2: -Base Pair The two strands are held together by hydrogen bonds between pairs of bases: adenine pairs with thymine, and cytosine pairs with guanine.
Detailed explanation-3: -First, a so-called initiator protein unwinds a short stretch of the DNA double helix. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the DNA strands, thereby pulling apart the two strands.
Detailed explanation-4: -hydrogen. Covalent bonds occur within each linear strand and strongly bond the bases, sugars, and phosphate groups (both within each component and between components). Hydrogen bonds occur between the two strands and involve a base from one strand with a base from the second in complementary pairing.