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