Question

1. Who was the cell theory given by? State the cell theory.

2. Which two German scientists devised electron microscope?

Answer 1

$\large\sf\underline{Question no. 1}$

• Who was the cell theory given by ? State the cell theory.

$\large\sf\underline{Answer}$

The classical cell theory was proposed by Theodor Schwann in 1839.

The main points of this theory are:-

• All living organisms are made up of a cell.
• The cell is the basic structural and functional unit of life.
• All biochemical processes occur within the cell.
• New cells are formed from pre-existing cells.
• Cells contain hereditary information which is transferred from generation to generation.

$\large\sf\underline{Question\: no. 2}$

• Which two German scientists devised electron microscope?

$\large\sf\underline{Answer}$

In 1931, two German scientists, Ernst Ruska and Max Knoll, found a way to achieve a resolution greater than that of light. They stopped using light, instead realizing they could transmit electrons through a specimen to form an image.

• Thnku ❣

Answer 2

1. Schleiden , Schwann and Rudolf Virchow
• All living organisms are composed of cells and their byproducts
• Cells arise from preexisting cells