NURSING ANM AND GNM

NURSING EXAM QUESTIONS

HUMAN ANATOMY PHYSIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Five-carbon sugar; deoxyribose and ribose are examples
A
Hexose
B
Octose
C
Pentose
D
Dextrose
Explanation: 

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.

There is 1 question to complete.