Which cell organelle contains acid hydrolase enzymes and functions as the primary intracellular digestive system?
Answer and explanation
Correct answer: C. Lysosome
- Step 1: Lysosomes are membrane-bound organelles containing over 50 acidic hydrolytic enzymes (optimal at pH ~4.5-5.0). Step 2. They degrade engulfed macromolecules, damaged organelles (autophagy), and foreign pathogens. Answer: Lysosome. Why not the others: Ribosomes lack membranes and synthesize proteins; centrosomes organize mitotic spindles; glyoxysomes convert fatty acids to carbohydrates in germinating seeds.
Practise more Cell Biology, Molecular Biology and Genetics.
Free questions with an explanation for every one, and full timed Medical College Admission Test (Bangladesh) mock tests.
More Cell Biology, Molecular Biology and Genetics questions
- Who proposed the Fluid Mosaic Model of the biological plasma membrane in 1972?
- Which cellular organelle is universally referred to as the powerhouse of eukaryotic cells due to oxidative ATP generation?
- What are the sedimentation coefficients of the two ribosomal subunits in a eukaryotic 80S ribosome?
- During which stage of Meiosis I does homologous chromosome crossing over and genetic recombination take place? (Hard)
- In which substage of Prophase I does synapsis (pairing of homologous chromosomes) occur?
- At which stage of mitosis do sister chromatids separate completely and move toward opposite spindle poles?