Question

what is the main function of following cell component:-
(a) Plasma membrane (d) Mitochondria
(b) Smooth endoplasmic reticulum (e) Lysosomes
(c) Ribosomes (f) Golgi apparatus

Answer 1

a) Plasma membrane : Plasma membrane protects the cell from outer unknown particles as it is selectively permeable and let only some ions pass in and out of it .

b) Smooth endoplasmic reticulum (SER) : It synthesise and stores lipids , metabolise calcium ion and plays important role in membrane biogenesis.

c) Ribosomes: Ribosomes may be free or attached to the surface of Rough Endoplasmic Reticulum . Its main function is the formation of protein , the building block of the cell .

d) Mitochondria : It is called the powerhouse of the cell as it generates energy in the form of ATP .

e) Lysosome : It is also called suicidal bag of the cell . They contain enzyme that remove waste from the cell and help it digest .

f) Golgi apparatus : This organelle is responsible for transporting , modifying and packaging proteins and lipids .

Answer 2

Plasma membrane : It allows or permits the entry and exist of some materials in and out of the cell.it also prevent the movement of some other material ..

Mitochondria:

it is known as powerhouse of the cell .the energy required in the form of atp.( adenosine triphoshate).molecules .atp is known as energy currency of the cell.

Smooth endoplasmic Recticilum :

S.E.R helps in the manufacture of fat molecules or lipids important for cell function.

Lysosomes:

They are known as suicide bags of the cells .these enzymes are made up of ReR ..

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