AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The sugar-phosphate backbone inside DNA is bonded together by ____
A
hydrogen bonds
B
nitrogen bonds
C
covalent bonds
D
phosphate bonds
Explanation: 

Detailed explanation-1: -Therefore, the bond between sugar and phosphate is phosphoester bond which is a covalent bond.

Detailed explanation-2: -Explanation: The bond formed between the sugar of one nucleotide and the phosphate of an adjacent nucleotide is a covalent bond.

Detailed explanation-3: -DNA and RNA are composed of nucleotides that are linked to one another in a chain by chemical bonds, called ester bonds, between the sugar base of one nucleotide and the phosphate group of the adjacent nucleotide.

Detailed explanation-4: -Covalent bonds are found in the DNA backbone (known as phosphodiester bonds).

Detailed explanation-5: -Phosphate Backbone Attached to each sugar is one of four bases–adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.

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