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