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