Question

who discovered cell???​

Answer 1

$\textbf{Cell is the structural and functional unit}$ $\textbf{of living organisms.}$

• All living organisms are made up of cell. That's why cell is known as structural unit of life.

• A single cell can perform all life functions with the help of it's components. Therefore it is known as functional unit of life.

→ $\textbf{Robert Hooke first discovered the cell}$ $\textbf{in 1665.}$

• He prepared a thin slice of cork and observed it under self made microscope. He saw some box like structures which he named as cell.

→ Anton Von Leeuwenhoek first saw the living cell and also first describe the living cell.

→ Each cell has a plasma membrane, cytoplasm and nucleus.

→ Human body is composed of trillions of cells.

→ Cell theory states that

• All living organisms are made up of cells.

• All cells come from pre-existing cells through cell division.

→ It contain hereditary information due to presence of nucleus or nucleoid.

→ All organisms are made up of cells. Organisms with single cells are known as unicellular organisms. And organisms with multiple cells are known as multicellular organisms.

→ Cells size ranges from 1 - 100 μm.

→ Mycoplasmas, is the shortest cell (0.3 μm) and ostrich egg and nerve cells are the largest cell.

→ Cells are in different shapes. Their shape vary with their function. They may be cuboid, thread like, disc like etc.

Answer 2

$\mathfrak{Cell:}$

• Cell is a Latin word which means a little room .
• It is the fundamental and structural unit of all living organisms.
• Study of cell : Cell Biology.

$\mathfrak{Discovery\:of\:Cell:}$

• Robert Hooke (1665) observed dead cell which resembled honey comb like structure in cork (come from bark of tree ''  slice of bar''.
• He called these boxes ''cell''.
• He published what he observed under microscope in his book micrographia.

• Anton Von Leeuwenhoek (1674) was first to discovered living cell like bacteria ( from tatar of teeth ) , erthrocytes (fish) , sperm and protozoans e.g.,[vorticella (bell like structure)].