THE CELL
CELL THEORY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
are made of many cells.”
|
|
|
are made of one or more cells.”
|
|
|
are made of carbon.”
|
|
|
are made of atoms."
|
Detailed explanation-1: -The classical cell theory was proposed by Theodor Schwann in 1839. There are three parts to this theory. The first part states that all organisms are made of cells. The second part states that cells are the basic units of life.
Detailed explanation-2: -The cell theory states that all biological organisms are composed of cells; cells are the unit of life and all life come from preexisting life. The cell theory is so established today that it forms one of the unifying principles of biology.
Detailed explanation-3: -All living organisms are made up of one or more cells, which are considered the fundamental units of life. Even unicellular organisms are complex! Inside each cell, atoms make up molecules, which make up cell organelles and structures.
Detailed explanation-4: -All living things are made of one or more cells. Organisms that are made of one cell are called unicellular and organisms that are made of multiple cells are called multicellular. Although unicellular organisms are only made of single cells, they are still incredibly complex.
Detailed explanation-5: -The cell theory was proposed by two scientists-Schleiden (1838)and Schwann (1839). It says that all the plants and animals are composed of cells and the cell is the basic unit of life. The cell theory was further expanded by Virchow (1855) by suggesting that all cells arise from pre-existing cells.