BIOLOGY
STRUCTURE OF NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2 nucleotide strands
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1 nucleotide strand
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code for proteins embedded in its structure
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makes copies of proteins
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Thymine
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Detailed explanation-1: -Adenine and guanine are found in RNA and DNA in terrestrial life, whereas thymine is only found in DNA and uracil only in RNA.
Detailed explanation-2: -Thymine helps stabilize nucleic acid structures. DNA is composed of two strands that twist upon each other to form a double helix. This double helix is held together by hydrogen bonds formed between nucleobases oriented in opposite strands. Adenine forms 2 hydrogen bonds with thymine.
Detailed explanation-3: -2. Each DNA strand is composed of nucleotides-units made up of a sugar (deoxyribose), a phosphate group, and a nitrogenous base. Each strand of DNA is a polynucleotide composed of units called nucleotides. A nucleotide has three components: a sugar molecule, a phosphate group, and a nitrogenous base.