Structure of DNA and RNA - Competitive Exam Level
Q. What is the function of ribosomal RNA (rRNA)?
-
A.
Carries genetic information
-
B.
Forms the core of ribosome structure
-
C.
Transports amino acids
-
D.
Catalyzes peptide bond formation
Solution
Ribosomal RNA (rRNA) forms the structural and functional core of ribosomes, which are essential for protein synthesis.
Correct Answer: B — Forms the core of ribosome structure
Q. What is the role of messenger RNA (mRNA)?
-
A.
To store genetic information
-
B.
To transport amino acids
-
C.
To carry genetic information from DNA to ribosomes
-
D.
To form the structure of ribosomes
Solution
Messenger RNA (mRNA) carries genetic information from DNA to the ribosomes for protein synthesis.
Correct Answer: C — To carry genetic information from DNA to ribosomes
Q. Which of the following describes a mutation?
-
A.
A change in the DNA sequence
-
B.
A process of DNA replication
-
C.
A type of RNA molecule
-
D.
A form of genetic inheritance
Solution
A mutation is defined as a change in the DNA sequence that can lead to alterations in gene function.
Correct Answer: A — A change in the DNA sequence
Q. Which of the following is a characteristic of DNA?
-
A.
Single-stranded
-
B.
Contains ribose sugar
-
C.
Double helix structure
-
D.
Contains uracil
Solution
DNA is characterized by its double helix structure, consisting of two strands wound around each other.
Correct Answer: C — Double helix structure
Showing 1 to 4 of 4 (1 Pages)
