OBJECTIVE LIFE SCIENCE
APPLIED BIOTECHNOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a phosphate, a deoxyribose sugar, and an A, T, C or G base
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a phosphate, a ribose sugar, and an A, T, C or G base
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a phosphate, a deoxyribose sugar, and a nitrogen base
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a phosphate, a sugar, and an acid
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Detailed explanation-1: -The right answer to the given question is option A) A double helix. It best describes the structure of a DNA molecule. Moreover, the DNA is not a single stranded and it does not comprise amino acids.
Detailed explanation-2: -The correct answer is (d) All are components of a nucleotide. Nucleotides have three major components: a sugar, a phosphate, and a nitrogenous base. The 5-carbon sugar and phosphate groups link together with other nucleotides to form a sugar-phosphate backbone.
Detailed explanation-3: -Definition. A nucleotide is the basic building block of nucleic acids (RNA and DNA). 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-4: -Molecules called nucleotides, on opposite strands of the DNA double helix, that form chemical bonds with one another. These chemical bonds act like rungs in a ladder and help hold the two strands of DNA together. There are four nucleotides, or bases, in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T).