The Original Three Tenets of the Cell Theory Are

Question

The original three tenets of the cell theory are
A) all organisms have DNA, all organisms are made of cells, and all cells produce proteins.
B) all organisms are made of one or more cells, the cell is the fundamental unit of life, and all cells come from preexisting cells.
C) all organisms are made of one or more cells, all cells contain DNA, and all cells come from preexisting cells.
D) all organisms are made of one or more cells, the cell is the fundamental unit of life, and all cells have a nucleus.
E) all organisms have DNA, DNA is the fundamental unit of life, and all cells come from preexisting cells.

Accepted Answer

The original three tenets of the cell theory, as proposed by Schleiden and Schwann in 1838, are all organisms are made of one or more cells, the cell is the fundamental unit of life, and all cells come from preexisting cells. Option A is incorrect as not all cells produce proteins. Option C is incorrect as it does not specify that DNA is present in all cells. Option D is incorrect as not all cells have a nucleus. Option E is incorrect as DNA is not the fundamental unit of life according to the cell theory.