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The two principal tenets of modern cell theory are that
AAll matter is made of atoms and all atoms are alike across the universe
BAll organisms are made of cells and cells arise from pre-existing cells
CAll cells contain DNA and all DNA is identical across species and tissue
DAll cells respire and all respiration is anaerobic at the cellular level
Answer & Solution
Correct answer: B. All organisms are made of cells and cells arise from pre-existing cells
Cell theory in current form: (i) all living organisms are composed of cells and cell products; (ii) all cells arise from pre-existing cells. Virchow's addition of the second tenet completed the theory.
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