Endomembrane System, Mitochondria, Plastids, Ribosomes — NEET Biology Questions

Practice 31 questions on Endomembrane System, Mitochondria, Plastids, Ribosomes from Cell: The Unit of Life (NCERT Class 11, Chapter 8). Free samples below — get all 31 in the app.

31 Questions Cell: The Unit of Life Class 11

Sample Questions — Endomembrane System, Mitochondria, Plastids, Ribosomes

Try 5 questions below from Endomembrane System, Mitochondria, Plastids, Ribosomes. Get all 31 in the MedicNEET app.

MCQ
The reason Golgi complex is called ‘traffic police’ of the cell is because:
  • A. It controls cytoplasmic streaming
  • B. It produces ribosomes
  • C. It provides energy
  • D. It modifies, sorts, and packs materials
✅ Correct Answer: D
Golgi acts as a center for sorting and packing of materials in the cell.
MCQ
Ribosomal RNA is synthesized in which organelle?
  • A. Nucleolus
  • B. Nucleoplasm
  • C. Nuclear envelope
  • D. Cytoplasm
✅ Correct Answer: A
Nucleolus is the site of rRNA synthesis and ribosome assembly.
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MCQ
What pigment is present in chromoplasts?
  • A. Chlorophyll and chromophyll
  • B. Xanthophylls and Carotenoids
  • C. Phycocyanin and xanthophyll
  • D. Anthocyanin
✅ Correct Answer: B
Chromoplasts contain pigments other than chlorophyll.
MCQ
What is the reason lysosomal enzymes are not harmful to living cells under normal conditions?
  • A. They are inactive at neutral pH
  • B. They are enclosed in vacuoles
  • C. They are always denatured
  • D. They are deactivated by DNA
✅ Correct Answer: A
Lysosomal enzymes function only in acidic pH; at the cytoplasm’s neutral pH, they are inactive.
MCQ
Which of the following statements is INCORRECT regarding lysosomes?
  • A. They contain hydrolytic enzymes active at acidic pH
  • B. They are involved in intracellular digestion
  • C. They are single membrane-bound structures
  • D. They synthesize proteins
✅ Correct Answer: D
Lysosomes do not synthesize proteins; they degrade waste using hydrolytic enzymes.

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