Question:medium
From the statements given below, choose the correct option:
(A) The eukaryotic ribosomes are 80S and prokaryotic ribosomes are 70S.
(B) Each ribosome has two sub-units.
(C) The two sub-units of 80S ribosome are 60S and 40S while that of 70S are 50S and 30S.
(D) The two sub-units of 80S ribosome are 60S and 20S and that of 70S are 50S and 20S.
(E) The two sub-units of 80S are 60S and 30S and that of 70S are 50S and 30S.
Choose the correct answer from the options given below:
From the statements given below, choose the correct option:
(A) The eukaryotic ribosomes are 80S and prokaryotic ribosomes are 70S.
(B) Each ribosome has two sub-units.
(C) The two sub-units of 80S ribosome are 60S and 40S while that of 70S are 50S and 30S.
(D) The two sub-units of 80S ribosome are 60S and 20S and that of 70S are 50S and 20S.
(E) The two sub-units of 80S are 60S and 30S and that of 70S are 50S and 30S.
Choose the correct answer from the options given below:
(B) Each ribosome has two sub-units.
(C) The two sub-units of 80S ribosome are 60S and 40S while that of 70S are 50S and 30S.
(D) The two sub-units of 80S ribosome are 60S and 20S and that of 70S are 50S and 20S.
(E) The two sub-units of 80S are 60S and 30S and that of 70S are 50S and 30S.
Choose the correct answer from the options given below:
Show Hint
Ribosome sub-units are essential for protein synthesis. Understanding the differences between prokaryotic and eukaryotic ribosomes is key to understanding cellular biology.
Updated On: Mar 19, 2026
- A, B, D are true
- A, B, E are true
- B, D, E are true
- A, B, C are true
Show Solution
The Correct Option is B
Solution and Explanation
(A) Statement: "Eukaryotic ribosomes are 80S, and prokaryotic ribosomes are 70S." Evaluation: Correct. Eukaryotic ribosomes measure 80S, while prokaryotic ribosomes are 70S.
(B) Statement: "Each ribosome comprises two sub-units." Evaluation: Correct. Ribosomes are composed of two sub-units.
(C) Statement: "The sub-units of an 80S ribosome are 60S and 40S, and those of a 70S ribosome are 50S and 30S." Evaluation: Incorrect. The correct sub-units for eukaryotic 80S ribosomes are 60S and 40S; 70S ribosomes consist of 50S and 30S sub-units.
(D) Statement: "The sub-units of an 80S ribosome are 60S and 20S, and those of a 70S ribosome are 50S and 20S." Evaluation: Incorrect. The sub-units of 80S ribosomes are 60S and 40S, and those of 70S ribosomes are 50S and 30S.
(E) Statement: "The sub-units of 80S ribosomes are 60S and 30S, and those of 70S ribosomes are 50S and 30S." Evaluation: Correct.
Conclusion: Statements A, B, and E are true.
(B) Statement: "Each ribosome comprises two sub-units." Evaluation: Correct. Ribosomes are composed of two sub-units.
(C) Statement: "The sub-units of an 80S ribosome are 60S and 40S, and those of a 70S ribosome are 50S and 30S." Evaluation: Incorrect. The correct sub-units for eukaryotic 80S ribosomes are 60S and 40S; 70S ribosomes consist of 50S and 30S sub-units.
(D) Statement: "The sub-units of an 80S ribosome are 60S and 20S, and those of a 70S ribosome are 50S and 20S." Evaluation: Incorrect. The sub-units of 80S ribosomes are 60S and 40S, and those of 70S ribosomes are 50S and 30S.
(E) Statement: "The sub-units of 80S ribosomes are 60S and 30S, and those of 70S ribosomes are 50S and 30S." Evaluation: Correct.
Conclusion: Statements A, B, and E are true.
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