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