Which experiments led to changes to the original cell theory?

Question

experiments that showed that blood cells transport gases, waste, and nutrients throughout the body
experiments that showed that all cells are similar in how they metabolize and in their composition
experiments that transplanted synthetic chromosomes into bacterial cells to create a new species
experiments that established the existence of single-celled organisms and microbes

Answer 1

The experiments that established the existence of single-celled organisms and microbes led to changes in the original cell theory.