NURSING EXAM QUESTIONS
HUMAN ANATOMY PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Hexose
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Octose
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Pentose
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Dextrose
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Detailed explanation-1: -Ribose & deoxyribose sugars. Ribose is a single-ring pentose [5-Carbon] sugar. The numbering of the carbon atoms runs clockwise, following organic chemistry rules. Note the absence of the hydroxyl (-OH) group on the 2’ carbon in the deoxy-ribose sugar in DNA as compared with the ribose sugar in RNA.
Detailed explanation-2: -What is deoxyribose? The Deoxyribose definition is a pentose (5-carbon sugar) biological molecule. Deoxyribose sugar, along with phosphate, makes up the sugar-phosphate backbone in deoxyribonucleic acid (DNA). DNA is the genetic code present in living organisms.
Detailed explanation-3: -The five-carbon sugar in DNA is called deoxyribose, while in RNA, the sugar is ribose. These two are very similar in structure, with just one difference: the second carbon of ribose bears a hydroxyl group, while the equivalent carbon of deoxyribose has a hydrogen instead.
Detailed explanation-4: -Both deoxyribose and ribose belongs to a class of sugars called Pentoses. Pentose sugar contains five carbon sugar molecule.