Metabolism encompasses the many reactions that take place in cells. to build tissue, produce energy, break down compounds, and do other cellular work. Anabolism refers to reactions that build compounds, such as protein or glycogen. Ca. -. tabolism is the breakdown of compounds to yield energy.
The one experiment that led to the changes to the original cell theory was the experiment that established the existence of single celled organisms and microbes. 1  Comments. 2  Report.
This had a major contribution to the cell theory and is considered one of the rules of the cell theory: all cells are produced from pre-existing cells. Anton van Leeuwenhoek. Anton van Leeuwenhoek built and improved microscopes.