AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA REPLICATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What kind of bond holds one nucleotide to another one above it or below it?
A
ionic
B
glycosidic
C
hydrogen
D
phosphodiester
Explanation: 

Detailed explanation-1: -When nucleotides are incorporated into DNA, adjacent nucleotides are linked by a phosphodiester bond: a covalent bond is formed between the 5’ phosphate group of one nucleotide and the 3’-OH group of another (see below). In this manner, each strand of DNA has a “backbone” of phosphate-sugar-phosphate-sugar-phosphate.

Detailed explanation-2: -Phosphodiester bonds are the covalent bonds that hold nucleotides together in a single strand of DNA. a. Find a phosphodiester bond in the three-dimensional structure.

Detailed explanation-3: -Answer and Explanation: Nucleotides are held together by phosphodiester bonds. Phosphodiester bonds are formed by the condensation of the 3’ OH group of a sugar on one nucleotide to the 5’ phosphate group of the next nucleotide.

Detailed explanation-4: -What is a Phosphodiester bond? A phospodiester bond is a covalent bond in which a phosphate group joins adjacent carbons through ester linkages. The bond is the result of a condensation reaction between a hydroxyl group of two sugar groups and a phosphate group.

Detailed explanation-5: -The bond joining two successive nucleotides in the same strand of DNA is called the phosphodiester bond. the phosphodiester bond is the linkage between the 3’ carbon atom of one sugar molecule and the 5’ carbon atom of another, deoxyribose in DNA and ribose in RNA.

There is 1 question to complete.