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