Cell Structure and Organelles MCQs Quiz 18 Posted on April 4, 2026April 5, 2026Author agropublishers 0 Cell Structure and Organelles MCQs Quiz 18 Cell Biology Multiple Choice Questions 1. ______________ are membrane-bound organelle containing an internal system of interconnected, flattened membrane sacs called thylakoids Nucleus Chloroplast Mitochondria Ribosome 2. _____________ initiates the assembly of spindle fibers during early stages of cell division Golgi body Lysosome Centrosome Ribosome 3. _______is a tough, rigid outer layer found in plant cells that provides structural support, protection, and a fixed shape Nucleus Cytoplasm Plasma membrane Cell wall 4. _______ is responsible for the formation of lysosomes Ribosome Golgi apparatus Nucleus Mitochondria 5. ______________ is the primary organelle responsible for storing water, nutrients, and maintaining turgor pressur in plant cells Mitochondria Golgi apparatus Ribosome Vacuole 6. The nucleolus is a specialized non-membrane-bound structure in eukaryotic cells, these are site of _______ Protein modification DNA replication Lipid synthesis Ribosome assembly 7. _______is a key organelle responsible for storing and releasing calcium ions to regulate their concentration in the cytoplasm of eukaryotic cells Smooth endoplasmic reticulum Nucleus Ribosome Golgi body 8. Which organelle is responsible for secretion secretion of proteins and lipids within the cell_______ Golgi Complex Nucleus Mitochondria Chloroplast 9. Condensin proteins function in _______ ATP synthesis DNA replication Chromosome condensation Protein folding 10. ________________ is known as the “powerhouse of the cell” Ribosome Nucleus Mitochondria Chloroplast Loading … Question 1 of 10 Cell Structure and Organelles MCQs Quiz 18 Cell Biology Multiple Choice Questions
