BIOMOLECULES AND ENZYMES

BIOLOGY

NUCLEIC ACIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Complementary nitrogen base pairs are held together by ____ (The type of bonds that hold one side of the DNA molecule to the other.)
A
metallic bonds
B
hydrogen bonds
C
ionic bonds
D
covalent bonds
Explanation: 

Detailed explanation-1: -Note that complementary base pairs are : A-T and G-C. So, to find the complementary strand, replace A by T, G by C and vice versa. The Adenine-Thymine base pair is held together by 2 hydrogen bonds while the Guanine-Cytosine base pair is held together by 3 hydrogen bonds.

Detailed explanation-2: -Answer and Explanation: Nitrogenous bases in nucleic acids are held together by hydrogen bonds.

Detailed explanation-3: -Each molecule of DNA is a double helix formed from two complementary strands of nucleotides held together by hydrogen bonds between G-C and A-T base pairs.

There is 1 question to complete.