Cell Structure and Organelles MCQs Quiz 23 Posted on April 5, 2026April 5, 2026Author agropublishers 0 Cell Structure and Organelles MCQs Quiz 23 Cell Biology Multiple Choice Questions 1. Which organelle, similar to mitochondria, contains its own genetic material? Ribosome Vacuole Nucleolus Chloroplast 2. What is the approximate molecular weight of the nuclear pore complex in mammalian cells? ~500 kDa ~1 kDa ~50 kDa ~120 MDa 3. Why doesn’t the lysosomal membrane get digested by its own enzymes? It has metal-enriched proteins It contains no lipids It has highly glycosylated proteins protecting it It is composed of metal-enriched cellulose 4. __________________ is involved in autolysis through digestive enzymes Lysosome Mitochondria Ribosome Golgi body 5. ___________________ is involved in intracellular transport Lysosome Nucleus Endoplasmic reticulum Chloroplast 6. The light-dependent reactions of photosynthesis occur in the ____________ Cytosol Nuclear envelope Thylakoid membranes Stroma 7. Chromatin is composed of DNA wrapped around which protein complexes? Transport proteins Histones Ribosomal proteins Enzyme complexes 8. The thylakoid membranes in chloroplasts contain which pigment-protein complexes? Photosystems ATP synthase only Hemoglobin complexes Cytochrome P450 9. During photosynthesis, chloroplasts primarily absorb which gas? Carbon dioxide (CO₂) Hydrogen (H₂) Nitrogen (N₂) Oxygen (O₂) 10. Centrioles are composed of microtubules made of ____________, arranged as triplets in a characteristic 9×3 pattern Actin Elastin Tubulin Collagen Loading … Question 1 of 10 Cell Structure and Organelles MCQs Quiz 23 Cell Biology Multiple Choice Questions
