Cell Structure and Organelles MCQs Quiz 21 Posted on April 4, 2026April 5, 2026Author agropublishers 0 Cell Structure and Organelles MCQs Quiz 21 Cell Biology Multiple Choice Questions 1. The middle lamella in plants is rich in _______ Pectin Cellulose Hemicellulose Lignin 2. _____________ contains highest concentration of digestive enzymes Golgi apparatus Nucleus Lysosome Peroxisome 3. _____________ enzyme is characteristic of peroxisomes and breaks down hydrogen peroxide Catalase Pepsin Lipase Amylase 4. First organelle to sediment during low-speed centrifugation is _______ Mitochondria Peroxisome Ribosome Nucleus 5. Organelle fractionation in cell begins with disruption of _______ Mitochondrial membrane Golgi vesicles Nuclear envelope Plasma membrane 6. _____________________ are considered the major organelle source of reactive oxygen species (ROS) in eukaryotic cells Dysfunctional Vacuole Dysfunctional Mitochondria Dysfunctional Golgi apparatus Dysfunctional Lysosome 7. Plasmodesmata are microscopic channels, involved in _______ Cell wall synthesis Transport across the membrane Protein degradation Cell-to-cell communication 8. Marker enzyme to identify mitochondria in biochemical studies is typically _______ DNA polymerase Catalase Amylase Succinate dehydrogenase 9. ____________________ is absent in prokaryotic cells Cytoplasm Cell membrane Endoplasmic reticulum Ribosome 10. Microbodies include _______ Lysosomes, peroxisomes, glyoxysomes Vacuoles, ER and Golgi Nucleus and ribosomes Mitochondria and chloroplasts Loading … Question 1 of 10 Cell Structure and Organelles MCQs Quiz 21 Cell Biology Multiple Choice Questions
