Question:
Ribosomes are composed of which of the following macromolecular components?
A. RNA
B. Protein
C. Glucose
D. DNA
Ribosomes are composed of which of the following macromolecular components?
A. RNA
B. Protein
C. Glucose
D. DNA
A. RNA
B. Protein
C. Glucose
D. DNA
Show Hint
Ribosomes = Ribonucleoprotein Complexes.
- Ribo = Ribosomal RNA (rRNA)
- Protein = Structural proteins
They do not contain DNA or carbohydrates like glucose.
- Ribo = Ribosomal RNA (rRNA)
- Protein = Structural proteins
They do not contain DNA or carbohydrates like glucose.
Updated On: Aug 13, 2026
- A and C only
- A and B only
- A, B and D only
- A, B and C only
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Ribosomes are conserved macromolecular machines found within all living cells.
They catalyze the assembly of amino acids into polypeptide chains during translation.
Detailed Explanation:
Structurally and biochemically, ribosomes are ribonucleoprotein (RNP) complexes.
They consist of two primary components:
1. Ribosomal RNA (rRNA) (A):
rRNA acts as both a structural scaffolding and a catalytic enzyme (ribozyme) that catalyzes peptide bond formation in the peptidyl transferase center.
2. Ribosomal Proteins (B):
These proteins associate with rRNA to stabilize the overall structure, assist in conformational changes, and facilitate the binding of tRNA and mRNA during translation.
Other options:
- Glucose (C) is a simple monosaccharide and is not a structural component of ribosomes.
- DNA (D) is the genetic material and is not part of the active ribosome structure.
Step 2: Final Answer:
Ribosomes are made up of RNA (A) and Protein (B).
Therefore, the correct option is (B).
Ribosomes are conserved macromolecular machines found within all living cells.
They catalyze the assembly of amino acids into polypeptide chains during translation.
Detailed Explanation:
Structurally and biochemically, ribosomes are ribonucleoprotein (RNP) complexes.
They consist of two primary components:
1. Ribosomal RNA (rRNA) (A):
rRNA acts as both a structural scaffolding and a catalytic enzyme (ribozyme) that catalyzes peptide bond formation in the peptidyl transferase center.
2. Ribosomal Proteins (B):
These proteins associate with rRNA to stabilize the overall structure, assist in conformational changes, and facilitate the binding of tRNA and mRNA during translation.
Other options:
- Glucose (C) is a simple monosaccharide and is not a structural component of ribosomes.
- DNA (D) is the genetic material and is not part of the active ribosome structure.
Step 2: Final Answer:
Ribosomes are made up of RNA (A) and Protein (B).
Therefore, the correct option is (B).
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