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Proper definition of Protoplasm for 5 mark questions ?


Unknown Student 29th Mar, 2020
Answers (2)
Harshit sethi 29th Mar, 2020

Protoplasm is the living contents of a cell that is surrounded by a plasma membrane. It is a general term for the cytoplasm.Protoplasm is composed of a mixture of small molecules such as ions, amino acids, monosaccharides and water, and macromolecules such as nucleic acids, proteins, lipids and polysaccharides.


Protoplasm is the site of many biological processes. In eukaryotes, for instance, the site of DNA and mRNA biosyntheses is the nucleus  . Proteins, in turn, are synthesized by the ribosomes. Lipid synthesis occurs in the endoplasmic reticulum  .


You can also add the components which are present in protoplasm and mention their functions that would also help (but write it in brief ) .



Pratyay Islam 29th Mar, 2020

Protoplasm can be defined as follows :

  • Protoplasm is the living part of cell which is  Transclucent in nature. It is colorless, odourless, viscous , elastic and granular in nature.
  • It is a Crystallo - Colloid mixture as explained by Fisher and Hardy.
  • Its particle size is between 0.001 micron to 0.1 micron
  • It has Sol, gel and emulsion type properties.
  • It is the site of most of the metabolic activities of cell.

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