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