Cell Structure and Organelles MCQs Quiz 30 Posted on April 6, 2026Author agropublishers 0 1. Which of the following best describes prokaryotic DNA organization? Located freely in cytoplasm Enclosed in nuclear envelope Attached to spindle fibers Stored in mitochondria 2. Which structure organizes cellular components within the cytoplasm? Cytoskeleton Lysosome Golgi apparatus Nucleus 3. Which organelle is directly involved in xenobiotic detoxification? Nucleus Smooth endoplasmic reticulum Golgi apparatus Ribosome 4. ATP yield from complete oxidation of one glucose molecule in eukaryotic cells is best approximated as _______ 95-100 ATP 2-3 ATP 4-10 ATP 30–32 ATP 5. During anaerobic conditions (when oxygen is unavailable), animal cells sustain ATP production primarily by ___________ Oxidative phosphorylation via the electron transport chain The citric acid (Krebs) cycle Glycolysis coupled with fermentation β-oxidation of fatty acids 6. ___________ is responsible for protein synthesis in prokaryotes Capsule Plasma membrane Nucleoid Ribosomes 7. A major detoxification role of peroxisomes involves _______. Neutralization of ROS DNA replication Protein folding RNA transcription 8. Which of the following is a major function of the cytosol? DNA packaging Cell wall formation Membrane synthesis Site of many metabolic reactions 9. Which type of fatty acids are preferentially oxidized in peroxisomes? Medium-chain fatty acids Short-chain fatty acids Unsaturated fatty acids Very long-chain fatty acids 10. The plasma membrane separates _______ DNA from proteins Organelles from cytosol Cell interior from external environment Nucleus from cytoplasm Loading … Question 1 of 10
