The Fundamental Unit of Life (जीवन की मौलिक इकाई) Ch(5) Practice Quiz in Hindi Part – 2 || Class 9 Science Practice Quizzes in English

explanation: Membrane biogenesis is the process by which the cell membrane is built from proteins and lipids synthesized by the endoplasmic reticulum.  

explanation: Cellulose is a complex carbohydrate that provides structural strength to plant cell walls.  

explanation: The Golgi apparatus consists of stacks of membrane-bound vesicles that function in the storage, modification, and packaging of substances manufactured in the cell.  

explanation: Chlorophyll is the pigment that captures light energy for photosynthesis.  

explanation: The nuclear membrane is a double-layered membrane that separates the nucleus from the cytoplasm in eukaryotic cells.  

explanation: Plastids are large membranous organelles found in plant cells that are of two types – chromoplasts and leucoplasts.  

explanation: Leucoplasts are colorless plastids that store various materials, including starch, oils, and protein granules.  

explanation: The endoplasmic reticulum (ER) functions as a passageway for intracellular transport and as a manufacturing surface for proteins and lipids.  

explanation: Cell division is the process by which cells divide for growth of body, for replacing dead cells, and for forming gametes for reproduction.  

explanation: Mitosis is the type of cell division that produces two identical daughter cells for growth and repair of tissues.  

explanation: Lysosomes are membrane-bound sacs containing digestive enzymes that break down waste materials and cellular debris.  

explanation: The endoplasmic reticulum (ER) is a network of membrane-bound tubes and sheets involved in protein synthesis, lipid synthesis, and transport of materials.  

explanation: Meiosis is a type of cell division that produces four daughter cells with half the number of chromosomes as the parent cell, leading to the formation of gametes.  

explanation: Mitochondria are responsible for generating energy in the form of ATP through cellular respiration.  

explanation: Cellular reproduction is the process by which a cell divides and forms two new cells.  

explanation: Vacuoles are storage sacs for various substances, including water, nutrients, and waste products.  

explanation: Ribosomes are the sites of protein synthesis in the cell.

explanation: Prokaryotic cells have no membrane-bound organelles, and their chromosomes are composed of only nucleic acid.  

explanation: Vacuoles are responsible for expelling excess water and some wastes from the cell.  

explanation: Stroma is the material in which membrane layers are embedded inside a chloroplast.