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Q. Lysosomes are formed from : ER Golgi bodies Mitochondria Both (a) and (b)

Q. An element present in middle lamella is : Calcium Sodium Potassium Iron

Q. Tonoplast, a differentially permeable membrane surrounds : Vacuole Nucleus Lysosome Cytoplasm

Q. Membrane is most abundant in a cell? Plasma membrane Golgi membrane Nuclear membrane ER membrane