NEET BIOLOGY

Detailed explanation-1: -The generally accepted parts of modern cell theory include: All known living things are made up of one or more cells. All living cells arise from pre-existing cells by division. The cell is the fundamental unit of structure and function in all living organisms.

Detailed explanation-2: -Key Points. The cell theory describes the basic properties of all cells. The three scientists that contributed to the development of cell theory are Matthias Schleiden, Theodor Schwann, and Rudolf Virchow. A component of the cell theory is that all living things are composed of one or more cells.

Detailed explanation-3: -Classical cell theory contains three explanations about cells. These principles are: cells are the basic unit of life, all living things are made up of cells, and all cells come from other cells. Cells cannot spontaneously generate, or arise from non-living matter.

Detailed explanation-4: -Viruses lack the typical structure of a cell and donot perform any functions of a cell hence cell theory is not applicable to viruses.

Detailed explanation-5: -The first part states that all organisms are made of cells. The second part states that cells are the basic units of life. These parts were based on a conclusion made by Schwann and Matthias Schleiden in 1838, after comparing their observations of plant and animal cells.