AP BIOLOGY

THE CELL

CELL THEORY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Cells come only from what?
A
existing cells
B
nucleus
C
fission
D
budding
Explanation: 

Detailed explanation-1: -Scientists once thought that life spontaneously arose from nonliving things. Thanks to experimentation and the invention of the microscope, it is now known that life comes from preexisting life and that cells come from preexisting cells.

Detailed explanation-2: -Rudolf Virchow famously stated “Omnis cellula e cellula”… “All cells only arise from pre-existing cells.

Detailed explanation-3: -When cells become damaged or die the body makes new cells to replace them. This process is called cell division. One cell doubles by dividing into two. Two cells become four and so on.

Detailed explanation-4: -The third part of the cell theory definition states that all cells come from preexisting cells. This means that cells don’t just appear out of thin air (known as “spontaneous generation”). New cells are always made from current cells.

There is 1 question to complete.