Cell Structure and Organelles MCQs Quiz 12 Posted on April 2, 2026April 2, 2026Author agropublishers 0 Cell Structure and Organelles MCQs Quiz 12 Cell Biology Multiple Choice Questions 1. The green color of chloroplast is due to _______ Carotenoids Anthocyanin Chlorophyll Xanthophylls 2. ___________________ is unique to bacterial cell walls and targeted by antibiotics like penicillin Peptidoglycan synthesis Cellulose Chitin Silica 3. Which enzyme counteracts telomere shortening? Helicase Telomerase DNA telomer ligase RNA polymerase 4. Acrocentric chromosomes have _______ Central centromere Near-terminal centromere Equal arms No centromere 5. Chromosome puffs, found in polytene chromosomes, indicate _______ DNA damage Inactive regions Protein folding Active transcription 6. _______________ is the outermost layer of the plant cell wall, acting as an interface between adjacent cells Secondary wall Primary wall Middle lamella Plasma membrane 7. Telomerase primarily functions to maintain _____________ Protein folding Telomere length Centromere structure DNA replication fidelity 8. Elaioplasts are specialized for storage of _______ DNA Proteins Lipids Starch 9. In chloroplasts, grana are composed of stacked _______ Thylakoids Ribosomes Cristae Vesicles 10. Chromosomes are composed primarily of _______ DNA and Proteins Proteins and RNA RNA and Amino Acids DNA and RNA Loading … Question 1 of 10 Cell Structure and Organelles MCQs Quiz 12 Cell Biology Multiple Choice Questions