AP BIOLOGY

THE CELL

CELL THEORY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is NOT a premise of the cell theory?I. All cells arise from other cellsII. All living things require water for survivalIII. All living things are only composed of cells
A
I only
B
II only
C
I and II
D
II and III
Explanation: 

Detailed explanation-1: -Rudolf Virchow modified the cell theory and added “Omnis cellula-e cellula", which means that all cells arise from pre-existing cells. Though cells require water for its composition and survival, it is not a part of cell theory.

Detailed explanation-2: -1) All organisms are made of cells. 2) All existing cells are produced by other living cells. 2) All existing cells are produced by other living cells. 3) The cell is the most basic unit of life.

Detailed explanation-3: -The three tenets of the cell theory are: All living organisms are composed of one or more cells. The cell is the basic unit of structure and organization in organisms. Cells arise from pre-existing cells.

Detailed explanation-4: -So, the correct answer is ‘Virus’

Detailed explanation-5: -Everything that lives is made up of cells. The second part of cell theory was that new cells are formed from preexisting cells. The third part is that all cells are similar. Finally, cells are the most basic units of life.

There is 1 question to complete.