Prepare for NEET with Botany-specific practice questions. Covering all major Botany chapters, this is perfect for your NEET Biology needs.
Which characteristic of DNA makes it a more stable carrier of genetic information compared to RNA?
The presence of uracil instead of thymine
Its single-stranded structure
The presence of deoxyribose sugar instead of ribose sugar
Its susceptibility to alkaline hydrolysis
The “RNA world” hypothesis proposes that RNA preceded DNA and proteins as the primary genetic material. A major challenge to this hypothesis is the relative instability of RNA compared to DNA. Why is RNA less stable?
RNA utilizes uracil instead of thymine.
RNA is typically single-stranded.
The 2'-OH group on the ribose sugar makes RNA susceptible to hydrolysis.
RNA is shorter than DNA.
Why is RNA considered a less stable molecule than DNA?
The presence of uracil instead of thymine.
The single-stranded nature of RNA.
The presence of the 2'-OH group in ribose.
The shorter length of RNA molecules.
Which of the following sugars is found in nucleic acid?
Glucose
Fructose
Both ribose and deoxyribose
Sucrose
Which of the following is not relevant to the structure of double helical DNA?
Hydrogen bonds
Phosphodiester bonds
Base stacking interactions
Peptide bonds
Which of the following is not relevant to the structure of double helical DNA?
Deoxyribose sugar
Nitrogenous bases
Hydrogen bonds
Ribose sugar
Ribose sugar is present in
RNA polymerase, RNA and ATP
RNA only
RNA polymerase and ATP
RNA and ATP
Find the correct combination, that can form a nucleotide of RNA.
Adenine + deoxyribose +phosphate
Thymine + ribose + phosphate
Uracil + deoxyribose + phosphate
Uracil + ribose + phosphate
