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                              CELL- THE UNIT OF LIFE


·         Agranal Chloroplast: Chloroplasts having thylakoids that do not form grana as in algae.

·         Active Transport: A method in which a cell transports material by expending energy.

·         Antiport: Counter transport of two solutes across a membrane in opposite direction.

·         Bioplast: A term originally used for a mitochondrion by Altman (1890).

·         Cell Biology: The study of organization and functioning of cell.

·         Cytology: The study of cell with the help of light microscope.

·         Cyclosis: Constant movement of cytoplasm around the vacuole/vacuoles.

·         Co-transport: Transport of a molecule and an ion together across a membrane by a single carrier protein.

·         Differentially Permeable: A selectively permeable membrane that allows some particles to pass through and prevent others at the same time.

·         Ergastoplasm: A term originally used for granular endoplasmic reticulum by Granier (1897).

·         Ergasome: Another term for a polyribosome.

·         Electrochemical: The difference of electrical charges and concentration of the ions present on two sides of a membrane.

·         Golgi-ER-Lysosome (GERL): A region of Golgi maturating face, thought to be involved in the production of lysosomes and/ or pre secretory granules.

·         MTOCs: Microtubule organizing centre.

·         Nucleolar Organizer: Chromosomal region that contains the genes for ribosomes RNAs and induces formation of nucleolus.

·         Osmotic Potential: It is the capacity of a solution to take in water from the other side of a semi- permeable membrane.

·         Organelles: Organised protoplasmic subunits having specific functions.

·         Totipotency: The ability of a somatic cell to form a complete organism.

·         Turgidity: A state of a plant cell when the cells protoplast exerts pressure on the cell wall due to endosmosis.


Mr. A. KINGSLIN M.Sc, BEd, Phd,(doing)
Post Graduate Teacher in Botany
St. Mary Goretty Hr. Sec School, Manalikarai 
Kanyakumari district

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