He created great controversy among scientists, and to settle the dispute, cell theory was adjusted to include both spontaneous generation and the idea that cells come from pre-existing cells.
He showed that the broth was composed of micro-organisms which needed air, showing that cells need oxygen for cellular respiration.
His work, which was documented and repeatable, contradicted the accepted cell theory, so a change in the theory was required.
His reputation as a great scientist convinced other scientists to accept his work and change cell theory.

Question

He created great controversy among scientists, and to settle the dispute, cell theory was adjusted to include both spontaneous generation and the idea that cells come from pre-existing cells.
		He showed that the broth was composed of micro-organisms which needed air, showing that cells need oxygen for cellular respiration.
		His work, which was documented and repeatable, contradicted the accepted cell theory, so a change in the theory was required.
		His reputation as a great scientist convinced other scientists to accept his work and change cell theory.

unklerhaukus · Answer

He has the name Louis Pasteur

anonymous · Answer

Yes, sounds like Louis Pasteur to me