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Biology CBSE Live product
Class 9 (2025-26)
The fundamental unit of life
Annual Revision III
2.
Cell organelle - Ribosome
Question:
2
m.
Tick the correct choice:
1
.
Which observation would most strongly indicate that a cell structure is not a ribosome?
It contains both RNA and proteins
It lacks any surrounding membrane
It is enclosed within a double membrane
It participates in protein synthesis
2
.
Which feature best explains why rough ER, but not smooth ER, directly contributes to secretory protein formation?
Ability to synthesize lipids
Presence of double membranes
Connection with the Golgi apparatus
Attachment of ribosomes
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