MCQ questions for class 9 Science Chapter 5 The Fundamental Unit Of Life
Question 1: Who is regarded as the father of microscopy?
Robert Hooke
Anton van Leeuwenhoek
Robert Koch
Louis Pasteur
Question 2: Which organelle is responsible for cellular respiration?
Nucleus
Mitochondrion
Chloroplast
Endoplasmic reticulum
Question 3: The basic structural and functional unit of life is the:
Cell
Tissue
Organ
Organ system
Question 4: Who discovered the cell for the first time?
Robert Hooke
Anton van Leeuwenhoek
Theodor Schwann
Rudolf Virchow
Question 5: Which type of cells lack a well-defined nucleus?
Animal cells
Plant cells
Bacterial cells
Fungal cells
Question 6: The outermost layer of plant cells is known as the:
Cell membrane
Cell wall
Nucleus
Cytoplasm
Question 7: The term "prokaryotic" refers to cells that:
Have a true nucleus
Lack a true nucleus
Are found in plants only
Are found in animals only
Question 8: Which organelle is responsible for photosynthesis in plant cells?
Nucleus
Mitochondrion
Chloroplast
Endoplasmic reticulum
Question 9: The endoplasmic reticulum is primarily involved in:
Cellular respiration
Protein synthesis
Lipid synthesis
Carbohydrate synthesis
Question 10: The process of breakdown of complex substances into simpler ones within the cell is called:
Photosynthesis
Respiration
Digestion
Synthesis
Question 11: Which cellular organelle contains digestive enzymes?
Nucleus
Vacuole
Lysosome
Ribosome
Question 12: The powerhouses of the cell, responsible for energy production, are the:
Nuclei
Golgi apparatus
Mitochondria
Chloroplasts
Question 13: What is the function of the Golgi apparatus?
Cellular respiration
Protein synthesis
Lipid synthesis
Modification and packaging of proteins
Question 14: Which cell organelle is responsible for detoxifying harmful substances in the cell?
Nucleus
Smooth endoplasmic reticulum
Mitochondrion
Golgi apparatus
Question 15: The process by which cells engulf large particles or cells is called:
Osmosis
Active transport
Exocytosis
Phagocytosis
Question 16: The cell membrane is composed mainly of:
Proteins
Carbohydrates
Nucleic acids
Lipids
Question 17: Which type of cells possess a large central vacuole?
Animal cells
Plant cells
Bacterial cells
Fungal cells
Question 18: Who proposed the fluid mosaic model of the cell membrane?
Robert Hooke
Anton van Leeuwenhoek
Singer and Nicolson
Theodor Schwann
Question 19: In a plant cell, what gives rigidity and shape to the cell?
Nucleus
Cell membrane
Cell wall
Mitochondrion
Question 20: Which organelle is responsible for cellular respiration in both plant and animal cells?
Nucleus
Mitochondrion
Chloroplast
Endoplasmic reticulum
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