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