OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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ionic bonds
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hydrogen bonds
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covalent bonds
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van der walls forces
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Detailed explanation-1: -Hydrogen bonds formed within the AT and GC base pairs as a function of base opening. The horizontal lines indicate hydrogen bond with distances <3.5 Å and <30° departure from linearity.
Detailed explanation-2: -The type of bonds between A-T and G-C base pairs are hydrogen bonds. There are two hydrogen bonds between A-T base pairs, while there are three hydrogen bonds between the G-C base pair. These hydrogen bonds between the complementary bases help hold the two DNA strands together.
Detailed explanation-3: -An A-T DNA base pair has two hydrogen bonds holding it together. A G-C DNA base pair has three hydrogen bonds. These hydrogen bonds work to hold the two strands of DNA together, and also help ensure the bases pair up correctly.
Detailed explanation-4: -The Adenine-Thymine base pair is held together by 2 hydrogen bonds while the Guanine-Cytosine base pair is held together by 3 hydrogen bonds.