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