According to the unified cell theory, where do new cells come from?
AThey form from soil minerals
BThey arise from existing cells
CThey condense out of the air
DThey grow from dead matter
Answer & Solution
Correct answer: B. They arise from existing cells
1. The unified cell theory makes three claims about life.
2. All living things are composed of one or more cells, and the cell is the basic unit of life.
3. The third claim answers the question: new cells arise from existing cells, not from nonliving matter.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 4 "Cell Structure", section 4.1 Studying Cells_
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