CELL ORGANELLES AND THEIR FUNCTIONS:-
WILLIAM HARWAY FATHER OF PHYSIOLOGY
-physiology study of normal functioning of human body
cell:-structural and functional unit of life /living organism.
1)plasma membranes:-
-made of phospholipid bilayer
-it forms the boundary.
protects the cellorganell
-selectively semi -permeable membrane which allow molecule to pass through it.
surface area for all biochemical reaction.
-simple diffusion.
-2)nucleus:-
forms the cell center.
-center for all metabolic activation.
-cell division and multiplication of cell.
-all cells have nuclease except RBC
-carries the hereditary material from parent.
-RNA processing within the nuclease
lysosome:-
called as suicide bag(self destruct)
-in phagocytosis ,it take part in digestion by releasing lytic enzyme from lysosome ,breaks down the protein.
-in tadpole the tail is discarded due to the presence of lysosome
-old senile cell(dead cell)acted by lysosome.
-pathogens are discarded.
ribosome:-
site of protein synthesis.
-ER attached ribosome sent out synthesized protein by exocytosis.
-free ribosome take part in protein synthesis ,remains in the cell.
endoplasmic retinaculum:-
forms of network of membrane and canals cisternae all together form ER.
-ER connects the cell membrane to the nucleas and it forms a intracellular transport system.
-increases the surface area for biochemical reaction.
-increases forms temporary storage for synthesized proteins and lipid.
-it gives mechanical support for cell.
mitochondria:-
power house of the cell.
-undergo oxidation of glucose ,aminoacidic fats to release ATP and it is stored
centrioles:-
consist of microtubules and microfilaments.
during cell division it forms spine fiber
-in neuron it help in axonal transport.
Golgi complex:-
it is a part of endoplasmic retinaculum
-made of flattened membrane.
functions-sorting packing ,production of the and delivery to the cell by exocytosis.
Comments