Advertisements
Advertisements
प्रश्न
Who proposed the Cell theory? Explain the main points of this theory.
उत्तर
In 1839, M.J. Schleiden and T. Schwann proposed the cell theory. This was further expanded by Virchow in 1858.
The main features of the cell theory as known at present are:
(i) All living organisms are composed of cells. Hence cell is the structural unit of living organisms.
(ii) All cells arise from pre-existing cells of a similar kind by cell division.
(iii) The chemical composition and metabolism of all cells are basically alike.
APPEARS IN
संबंधित प्रश्न
State the difference between eukaryotes and prokaryotes
The cell organelle that helps in the respiration of the cell is :
Do you think the cells of an elephant would be larger than the cells of a rat? Explain briefly.
Name the scientist who invented the first microscope
Define the term cell? Also, describe types of cells.
What was the contribution of the following to our knowledge of cells?
Virchow
What was the contribution of the following to our knowledge of cells?
Schleiden
Expand - RER
Fill in the blank with a suitable word:
______ controls all the metabolic activities of the cell.
Who studied the cell first?
