notes in biology

May 19th, 2015
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1. Father of cytology is Robert hooke.2. Cell is the Fundamental, structural and functional unit of all living organisms. 3. Robert hook discovered cell in 1665.4. Simple microscope, compound microscope and electron microscope are discovered respectively by Anton-von-leeuwenhock, francis and zacharis jonnson, knell and ruska.

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1. Father of cytology is Robert hooke.2. Cell is the Fundamental, structural and functional unit of all living organisms.3. Robert hook discovered cell in 1665.4. Simple microscope, compound microscope and electron microscope are discovered respectively by Anton-von-leeuwenhock, francis and zacharis jonnson, knell and ruska.5. Smallest cell Mycoplasma gallicepticum.6. Largest cell Egg of ostrich.7. Longest and smallest human cells are Nerve cell, platelets.8. Longest unicellular and multicellular plant cell Acetabularia , fibre of ramie (boehmeria nivea).9. Cell theory in 1839 stated that Body of all organisms are made of cells which are units of both structure and function of living. Cells originate from pre-existing cells. The structure and functions of living are due to cumulative activities of cells.10. Cell wall is composed of Cellulose, lignin, pectin etc.11. Bacterial cell wall is made of Peptidoglycan.12. Fungi cell wall is made of Chitin,chitosan etc.13. Brown algae cell wall is made of Alginic acid.14. Cytoplasmic bridges in plant cells that maintain connectivity is Plasmodesmata.15. Plasma membrane is living and composed of Lipid and protein.16. Owing to Selectively permeable nature plasma membrane helps in passive transport and osmosis.17. Protoplasm is divided into Cytoplasm and nucleoplasm. It provides matrix of cell.18. Nucleoplasm contains Nuclear chromatin and nucleoli.19. Nucleoplasm is the site enzyme activities and formation of Spi

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