THE MOLECULAR BASIS OF INHERITANCE
STRUCTURE OF NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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fructose
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ribose
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glucose
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deoxyribose
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Detailed explanation-1: -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-2: -The sugar in DNA is deoxyribose.
Detailed explanation-3: -DNA contains deoxyribose as the sugar component and RNA contains the sugar ribose.
Detailed explanation-4: -The sugar in DNA is called a deoxyribose because it doesn’t have a hydroxyl group at the 2’ position. Instead it just has a hydrogen.
Detailed explanation-5: -The term “deoxy” refers to the fact that there is no oxygen attached to the 2’ carbon atom. There is a molecule that is similar to DNA but has an oxygen atom at this position. Its sugar is therefore called ribose and its name is ribonucleic acid or RNA.