Cell Theory and Its Concepts

This video provides an overview of cell theory, a fundamental concept in biology. It begins with the historical development of the theory, highlighting contributions by Schleiden, Schwann, and Virchow. The video then outlines the five main postulates of cell theory: all living organisms are composed of cells, the cell is the basic unit of life, cells are the physiological and organizational units of organisms, cells carry hereditary material, and new cells arise from pre-existing cells.

Who were the two scientists that independently proposed the initial concept of cell theory?

• Gregor Mendel and Louis Pasteur

• Matthias Jacob Schleiden and Theodor Schwann

• James Watson and Francis Crick

• Charles Darwin and Alfred Wallace

Which scientist further modified the cell theory in 1855?

• Rudolf Virchow

• Robert Hooke

• Antonie van Leeuwenhoek

• Carl Linnaeus

According to cell theory, what is the smallest unit of life?

• Tissue

• Organ

• Cell

• Molecule

What role do cells play in the continuity of life?

• They are responsible for photosynthesis

• They are the basic unit of energy

• They maintain continuity through hereditary material

• They are the largest unit of life

Which statement is NOT a postulate of the cell theory?

• Cells are the hereditary units of life

• New cells arise from non-living matter

• Cells are the basic structural and functional units of life

• All living organisms are made up of cells