Structure Of The Inner Compartment

1203 WordsJun 15, 20155 Pages
1 Mitochondria- Appear as tiny thread like structure under light microscope. Its wall are made of double membrane The inner membrane is folded inside to form projections called cristae which project into the inner compartment called matrix. Function : Oxidises pyruvic acid (breakdown product of glucose) to release energy which gets stored in the from of ATP for ready use. This process is also called cellular respiration. 2 Chloroplast Found in all green plant cells in the cytoplasm. Shape: Usually disc-shaped or spherical. Wall made of double membrane i.e. outer membrane and inner membrane numerous stack-like (piles) groups are interconnected by lamellae. Sac like structures called thylakoids. Placed one above the other…show more content…
4 Gogli body Is a stack of membranous sacs of the same thickness as ER. Exhibit great diversity in size and shape. In animal cells present around the nucleus, 3 to 7 in number. In plant cells, many and present scattered throughout the cell called dictyosomes. Synthesis and secretion as enzymes, participates in transformation of membranes to give rise to other membrane structure such as lysosome, acrosome, and dictyosomes, synthesize wall element like pectin, mucilage. 5 Ribosomes Spherical about 150 - 250 Å in diameter, made up of large molecules of RNA and proteins (ribonucleo proteins) Present either as free particles in cytoplasm or attached to ER. Also found stored in nucleolus inside the nucleus. 80S types found in eukaryotes and 70S in prokaryotes (Ssvedberg unit of measuring ribosomes). 6 Lysosomes Lysosomes are present in almost all animal cells and some non - green plant cells They perform intracellular digestion. Membranous sacs budded off from golgi body. Lysosomes are called “suicidal bags” as enzymes contained in them can digest the cell’s own material when damaged or dead.Importance of intracellular digestion by the lysosomes help in nutrition of the cell by digesting food, as they are rich in various enzymes which enable them to digest almost all major chemical constituents of the living cell. Help in defence by digesting germs, as in white blood cells. Help in cleaning up the cell by
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