LABORATORY REVIEW
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A = C
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A = G and C = T
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A + C = G + T
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G + C = T + A
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Detailed explanation-1: -In an analysis of the nucleotide composition of DNA, which of the following will be found? Cytosine makes up 42% of the nucleotides in a sample of DNA from an organism.
Detailed explanation-2: -The statement that is true about the structure of nucleotides is (a.) Composed of 1 phosphate, 1 nitrogen base, and 1 sugar. Nucleotides are the primary building blocks of the nucleic acids, DNA and RNA. Each nucleotide consists of a five-carbon sugar, a phosphate group, and a nitrogenous base.
Detailed explanation-3: -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). In RNA, the base uracil (U) takes the place of thymine.
Detailed explanation-4: -While studying the nucleotide composition of native DNAs differing in origin, Chargaff noticed the following regularities. 1. All DNAS, regardless of their origin, contain equal numbers of purine and pyrimidine bases. Hence, in any DNA there is a pyrimidine nucleotide for each purine one.
Detailed explanation-5: -GC Content Calculator (Biologics International Corp, Indianapolis, USA)-DNA GC-content percentage is calculated as Count(G + C)/Count(A + T + G + C) * 100.