Prepare for NEET Biology Molecular Basis of Inheritance with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert explanations of DNA replication and genetics.
The two strands of a DNA molecule are held together by:
Covalent bonds
Ionic bonds
Hydrogen bonds
Peptide bonds
Which nitrogenous base is found in DNA but NOT in RNA?
Adenine
Guanine
Cytosine
Thymine
What is the shape of a DNA molecule?
Single helix
Double helix
Triple helix
Linear chain
The backbone of a DNA strand is formed by:
Nitrogenous bases
Sugar and phosphate
Only sugar
Only phosphate
Which of the following enzymes is NOT directly involved in DNA replication?
DNA polymerase
Helicase
Primase
RNA polymerase
During DNA replication, Okazaki fragments are formed on the:
Leading strand
Lagging strand
Both leading and lagging strands
Neither strand
Which of the following nitrogenous bases is NOT found in DNA?
Adenine
Guanine
Cytosine
Uracil
The bond that links adjacent nucleotides in a DNA strand is called a:
Peptide bond
Glycosidic bond
Hydrogen bond
Phosphodiester bond
If a DNA molecule contains 20% adenine, what percentage of guanine will it contain?
20%
30%
40%
50%