Identify the correct statements from the following:
A. The 'S' in ribosome units stands for Sedimentation Coefficient.
B. 70S ribosomes are found in the mitochondria and chloroplasts of eukaryotic cells.
C. Prokaryotic ribosomes are about 15 nm by 20 nm in size.
D. The subunits of ribosomes remain permanently fused together in the cytoplasm.
E. Ribosomes are responsible for the synthesis of lipids in the cell.
Choose the correct answer from the options given below:
A, B, C only
A, B, E only
B, C, D only
C, D, E only
A (True): 'S' is the Svedberg unit, a measure of density and size.
B (True): Organellar ribosomes (Mitochondria/Chloroplasts) are 70S, similar to prokaryotes.
C (True): This is the specific dimension mentioned in the NCERT "Cell: The Unit of Life" chapter.
D (False): Subunits only come together during protein synthesis (translation).
E (False): Ribosomes synthesize proteins; the Smooth ER synthesizes lipids.
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