Give the location and the main function of each of the following cell components

Give the location and the main function of each of the following cell components

Give the location and the main function of each of the following cell components

(a) plasma membrane

(b) cell wall

(c) Ribosome

(d) lysosomes

(e) Nucleolus

(f) Endoplasmic reticulum

g) chromosomes

Answer:

a) The plasma membrane is localized at the outer side of the cytoplasm.

Function:

i) It encloses the inner content of a cell and separates it from the external environment

ii) it acts as a selectively permeable membrane and therefore allows selective transport of molecules across the plasma membrane.

b) A cell wall is present outside the plasma membrane

Function:

its main function is to protect the plasma membrane and the inner component of cell i.e. it provides mechanical support to the cell.

c) Ribosomes are small granules-like structures located on the rough endoplasmic reticulum, cytoplasm and in nucleolus of the nucleus.

Its main function is to help in protein synthesis.

d) Lysosomes are present in the cytoplasm and mostly adjacent to the Golgi bodies.

Its main function is to destroy cellular debris by its enzymatic activity.

e) Nucleolus is present inside the nucleus of a cell.

Its main function is to synthesize ribosomes therefore it is called the ribosomal factory.

f) Endoplasmic reticulum is present in the cytoplasm just after the nucleus of a cell.

Its main function is to synthesize proteins, lipids, and fats.

g) chromosomes are found in the nucleus.

Its main function is to transport genetic material from one generation to the next.

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