Cell theory, Biology

CELL THEORY

Proposed by Mathias Jacob Schleiden, 1838 (Jerman Botanist), Theodore Schwann, 1839 (Jerman Zoologist)

It consists of 5 fundamental facts -

(i) Body of living organisms consists of different types of cells and their products i.e. Cell is the structural unit of life.

(ii) Single cell perform all the vital activities i.e. cells is the functional unit of life. All the activities of living organisms occur due to the metabolic activities of the cell.

(iii) Cell is the hereditary unit of life.

(iv) Cells are living or cell has life.

(Each cell is made of a small mass of protoplasm containing a nucleus in its inside and a plasma membrane with or without a cell wall on its outside)

(v) New cells arise from pre-existing cell. This statement was supported by "Cell Lineage Theory of Rudolf Virchow" which stated "Omnis cellula e cellula" i.e. new cells are formed inside the preexisting cells.

Posted Date: 10/5/2012 3:22:22 AM | Location : United States







Related Discussions:- Cell theory, Assignment Help, Ask Question on Cell theory, Get Answer, Expert's Help, Cell theory Discussions

Write discussion on Cell theory
Your posts are moderated
Related Questions
Explain the organisation of the intensive care unit? The following kinds of professional groups are required in the day to day functioning of a modern intensive care unit: Th

What is coronary disease? Coronary disease, or coronary insufficiency, is a disease in which there is total or partial obstruction of one or more of the arteries that irrigate

Catastrophism Once-popular belief which events in the history of earth had occurred in the past a sudden events and by processes different from those operating today. The periods

C o w - po x (vaccinia) E p idemiology: This infection, although mostly occurring in cows, sometimes also occurs in buffaloes. Under natural conditions, t


What are possible treatments available for a herniated disc injury?

Q What is the external rigid carapace of arthropods called? Of which substance is it made? Which kind of organic molecule is that substance? The exterior carapace of arthropods

Post-parturient haemoglobinuria (pph) in cattle and buffaloes The post-parturient haemoglobinuria (PPH) is an acute disease of high yielding buffaloes and cows. The disease oc

Q. Etiological factor of peptic ulcer? Peptic ulcer results when the neural and hormonal abnormality disrupts the factors that normally maintain mucosal integrity and permit pr

The effect of gravity on roots Cut various pieces of blotting paper about 8 cm square. Place these among two squares of glass. Place several radish or mustard seeds among the b