NEET MDS

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The portion of the cytoplasm that stains with basic dye are called as:



Choices

1 ) Peroxisomes
2 ) Lysosomes
3 ) Endosomes
4 ) Ergastoplasm

Explanation


Ergastoplasm:

The cells membrane-bound cell organelle that is actively involved in protein synthesis stains darkly with basic dyes. This basophilic staining is due to the presence of RNA.  Hence, the portion of the cytoplasm that stains with basic dyes are called as ergastoplsam. These Eargastoplasm are nothing but rough endoplasmic reticulum containing RNA which are involved in protein synthesis

Eg: Ergastoplsm in pancreatic acinar cells. 

Peroxisomes:

Peroxisomes also called microbodies which are small, membrane lined spherical bodies that contain oxidative enzymes like peroxidases, catalases, and many others. These enzymes breakdown hydrogen peroxidase which is toxic to the cell. Hence peroxisomes protect the cells from hydrogen peroxide.  They are also involved in beta-oxidation of fatty acids. Peroxisomes are seen more in liver and kidney cells. 

Lysosomes:

Lysosomes are spherical, membrane lined vesicles that contain more than 50 enzymes. thus lysosomes are referred to as digestive organelles of the cell. the enzyme acid phosphatase occurs exclusively in lysosomes. Lysosomal enzymes occur as glycoproteins and are more active in acidic pH. 

Endosomes:

They are membrane-bound vesicles formed by a process known as endocytosis and are seen in the cytoplasm of the cell .

 


Answer

Ergastoplasm

Last Modified : 25-Dec-2019

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