Cell Theory

Cell Theory is a fundamental concept in biology that states: 1) All living organisms are composed of one or more cells, 2) The cell is the basic unit of life, and 3) All cells arise from pre-existing cells.

Robert Hooke is credited with coining the term 'cell' after observing cork under a microscope and likening the structures he saw to the small rooms monks lived in.

Matthias Schleiden concluded that all plants are made of cells, which was a significant contribution to the development of Cell Theory.

Theodor Schwann discovered that all animals are also made of cells, further supporting the Cell Theory.

Rudolf Virchow's statement means 'All cells come from cells,' emphasizing that new cells arise only from existing cells.

Anton van Leeuwenhoek was the first to observe and describe single-celled organisms, which he called 'animalcules'.

Prokaryotic cells do not have a nucleus or membrane-bound organelles, while eukaryotic cells do.

The main components of a cell include the cell membrane, cytoplasm, nucleus, and organelles.

The cell membrane controls what enters and exits the cell, providing protection and structure.

The nucleus acts as the control center of the cell, housing the cell's DNA and coordinating activities like growth and reproduction.