Botany · Cell: The Unit of Life
NEET (UG) 2025 — Question 91
From the statements given below choose the correct option :
A. The eukaryotic ribosomes are 80 S and prokaryotic ribosomes are 70S.
B. Each ribosome has two sub-units.
C. The two sub-units of 80 S ribosome are 60 S and 40 S while that of 70 S are 50 S and 30 S .
D. The two sub-units of 80 S ribosome are 60 S and 20 S and that of 70 S are 50 S and 20 S .
E. The two sub-units of 80 S ribosome are 60 S and 30 S and that of 70 S are 50 S and 30 S .
- Option A:Correct
A, B, C are true
- Option B:
A, B, D are true
- Option C:
A, B, E are true
- Option D:
B, D, E are true
Answer: A
Step-by-step solution
Statement A is correct: eukaryotic ribosomes are 80S, prokaryotic are 70S. Statement B is correct: each ribosome has two subunits. Statement C is correct: 80S ribosome has 60S and 40S subunits; 70S has 50S and 30S. Statements D and E are incorrect because they give wrong subunit sizes. Therefore, A, B, C are true, which is option A.
Answer key and solution verified before publishing.
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- Exam
- NEET (UG) 2025
- Paper
- 2025 paper
- Subject
- Botany
- Chapter
- Cell: The Unit of Life
- Topic
- Ribosomes