Question

1. the cell theory states that new cells come from:

a. nonliving matter
b. older tissues
c. existing cells
d. dna

Explanation:

The cell theory has three main tenets, one of which is that all new cells arise from pre - existing cells. Option a is incorrect as the theory of spontaneous generation (cells from non - living matter) has been disproven. Option b is wrong because cells come from other cells, not older tissues. Option d is incorrect as DNA is the genetic material within cells and not the source of new cells.

Answer:

c. existing cells