Question

All the following statement are true regarding the cell theory except

• A. All living things or organism are made of cell
• B. All cell arise spontaneously
• C. Cell are the basic structural and functional unit of life
• D. All cells arise from preexisting cells

Answer 1

Answer:

B. All cell arise spontaneously

• In 1838, a German botanist, Matthias Schleiden was the first to state that cells are the building blocks of all plants.

• In the following year, another German botanist, Theodor Schwann stated that cells are the fundamental units of animals too.

• These statements ended the notion that plants and animals have fundamental differences in structure.

• Their discoveries led to the formulation of the ‘Cell Theory’. Cell Theory states that cells are the basic units of all living organisms.

• But, the cell theory failed to explain how new cells arise. In 1855, Rudolf Virchow, a German physiologist stated in German ‘Omnis cellula e cellula’ which means that new cells come from already existing cells.