AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Ribose is sugar present in the nucleotide
A
DNA
B
RNA
C
Both
Explanation: 

Detailed explanation-1: -ribose, also called D-ribose, five-carbon sugar found in RNA (ribonucleic acid), where it alternates with phosphate groups to form the “backbone” of the RNA polymer and binds to nitrogenous bases.

Detailed explanation-2: -Ribose is a monosaccharide pentose sugar present in RNA while deoxyribose is a derived monosaccharide sugar present in DNA.

Detailed explanation-3: -The pentose sugar in DNA is called deoxyribose, and in RNA, the sugar is ribose.

Detailed explanation-4: -A nucleotide consists of a nitrogenous basepentose-phosphate. When the sugar is ribose, a nucleotide is a ribonucleotide and is used for the biosynthesis of RNA. Similarly, when the sugar is deoxyribose, a nucleotide is a deoxyribonucleotide and is used for the biosynthesis of DNA.

Detailed explanation-5: -Ribonucleotides consist of a ribose sugar, phosphoric acid, and a nitrogenous base. An example of a ribonucleotide is an ATP (adenosine triphosphate). UTP, GTP, and CTP are other ribonucleotides found in RNA. Hence, the correct answer is option D.

There is 1 question to complete.