Which of the following is NOT one of the main components of the cell theory?

Question

A. cells must contain DNA
B. all living things are made of cells
C. cells can only come from other cells
D. Cells are the basic unit of life

Answer 1

A. cells must contain DNA is NOT one of the main components of the cell theory. The primary components of the cell theory state that:

1. All living things are made of cells.
2. Cells are the basic unit of life.
3. All cells arise from pre-existing cells.

While many cells do contain DNA, it is not a requirement stated in the cell theory itself.