MCQ questions for class 8 Science Chapter 8 Cell Structure and Functions
Question 1: What is the basic structural and functional unit of life?
Tissue
Cell
Organ
Organism
Question 2: Which of the following is known as the "powerhouse of the cell"?
Nucleus
Ribosome
Mitochondria
Endoplasmic reticulum
Question 3: What is the outermost covering of a plant cell called?
Cell membrane
Cell wall
Nucleus
Cytoplasm
Question 4: Which part of the cell controls the activities of the cell and contains genetic material?
Cell membrane
Nucleus
Mitochondria
Endoplasmic reticulum
Question 5: What is the liquid present inside the cell that holds organelles?
Cell membrane
Cell wall
Nucleus
Cytoplasm
Question 6: Which organelle is responsible for the synthesis of proteins in a cell?
Nucleus
Ribosome
Mitochondria
Endoplasmic reticulum
Question 7: Which organelle is responsible for the storage of food, water, and waste materials in a plant cell?
Vacuole
Nucleus
Chloroplast
Endoplasmic reticulum
Question 8: What is the green pigment present in plant cells that helps in photosynthesis?
Chlorophyll
Carotene
Melanin
Xanthophyll
Question 9: Which type of cells do not have a well-defined nucleus?
Prokaryotic cells
Eukaryotic cells
Animal cells
Plant cells
Question 10: What is the term for the process by which cells make more of their own kind?
Fermentation
Respiration
Reproduction
Assimilation
Question 11: Which type of cells have a true, well-defined nucleus?
Prokaryotic cells
Eukaryotic cells
Animal cells
Plant cells
Question 12: Which organelle is responsible for the process of photosynthesis in plant cells?
Nucleus
Ribosome
Mitochondria
Chloroplast
Question 13: What is the term for the protective layer that surrounds the cell and regulates the entry and exit of substances?
Cell membrane
Cell wall
Nucleus
Cytoplasm
Question 14: Which of the following is not a function of the cell membrane?
Regulating entry and exit of substances
Providing support and shape to the cell
Communicating with other cells
Protecting the cell
Question 15: What is the term for the network of thread-like structures present in the nucleus that contains genetic material?
Chromosome
Ribosome
Mitochondria
Endoplasmic reticulum
Question 16: Which organelle is responsible for the breakdown of food molecules to release energy in animal cells?
Nucleus
Ribosome
Mitochondria
Endoplasmic reticulum
Question 17: Which of the following is not a function of the nucleus?
Controlling cell activities
Containing genetic material
Regulating entry and exit of substances
Transmitting genetic information
Question 18: What is the term for the rigid outer covering of a plant cell that provides support and protection?
Cell membrane
Cell wall
Nucleus
Cytoplasm
Question 19: Which of the following organelles is responsible for the digestion of waste materials in animal cells?
Vacuole
Nucleus
Lysosome
Endoplasmic reticulum
Question 20: What is the term for the process of removal of waste products from the cell?
Excretion
Respiration
Assimilation
Reproduction
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