Cell Structure and Organelles MCQs Quiz 22 Posted on April 4, 2026April 5, 2026Author agropublishers 0 Cell Structure and Organelles MCQs Quiz 22 Cell Biology Multiple Choice Questions 1. Which protein polymer forms microtubules? Tubulin Keratin Actin Myosin 2. ___________ is the main component of the central vacuole in plant cells Water DNA Starch granules Protein crystals 3. _____________ are membrane-bound organelles with their primary function is to generate ATP (adenosine triphosphate) Lysosomes Mitochondria Ribosomes Golgi apparatus 4. The nucleolus is primarily involved in the synthesis of ___________ Transfer RNA (tRNA) DNA polymerase Ribosomal RNA (rRNA) Messenger RNA (mRNA) 5. The smooth endoplasmic reticulum is primarily involved in the synthesis of which molecules? Proteins for secretion Nucleotides Amino acids Lipids and steroids 6. Rate-zonal centrifugation separates particles based on _______ Chemical composition Charge differences Sedimentation velocity Enzyme activity 7. ________________ forms the bilayer structure of the plasma membrane Triglycerides Waxes Phospholipids Steroids 8. Electron microscopy is used in organelle isolation to assess _______ Transcription rate Protein structure DNA sequence Purity of fractions 9. The strong fluorescence of the Y chromosome in Q-banding is attributed to____________- Presence of ribosomal DNA clusters High GC content High gene density Abundance of repetitive AT-rich heterochromatin 10. Mitochondria contain their own unique genetic material, primarily characterized as ______________ Circular DNA Plasmid DNA Single-stranded RNA only Linear chromosomes Loading … Question 1 of 10 Cell Structure and Organelles MCQs Quiz 22 Cell Biology Multiple Choice Questions
