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