THE MOLECULAR BASIS OF INHERITANCE
DNA REPLICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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ribose sugar and base
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ribose sugar and phosphate group
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nitrogen base and deoxyribose sugar
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deoxyribose sugar and phosphate group
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Detailed explanation-1: -A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G) and thymine (T).
Detailed explanation-2: -DNA consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups.
Detailed explanation-3: -The backbone of DNA consists of a phosphate group and a deoxyribose. These two components are therefore connected by a phosphodiester bond.
Detailed explanation-4: -A molecule consisting of a nitrogen-containing base (adenine, guanine, thymine, or cytosine in DNA; adenine, guanine, uracil, or cytosine in RNA), a phosphate group, and a sugar (deoxyribose in DNA; ribose in RNA).
Detailed explanation-5: -Answer and Explanation: This statement is true. Each nucleotide will consist of three components: a pentose sugar (it may be deoxyribose, or ribose), a phosphate group, and a nitrogenous base bound to the pentose sugar (depending on the nucleic acid, it may be adenine, cytosine, guanine, and either thymine or uracil).