BIOLOGY
NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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phosphate
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base
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deoxyribose sugar
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phosphate
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Detailed explanation-1: -Which is the correct arrangement for a single DNA nucleotide? deoxyribose sugar → a phosphate → a base.
Detailed explanation-2: -Nucleosomes in turn form the repeating unit called chromatin which are thread-like stained bodies. Later, the chromatin fibres are further coiled and condensed to form chromosomes. Hence, the correct order is DNA → Nucleosome → Chromatin → Chromosome.
Detailed explanation-3: -Final answer: Adenine-Thymine is the correct base pairing for DNA molecules.
Detailed explanation-4: -Phosphate Backbone 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. Attached to each sugar is one of four bases–adenine (A), cytosine (C), guanine (G), or thymine (T).