<span>1. Glucose is a sugar broken down for energy in cellular respiration.
2. Glucose molecules are bonded together to make starch, the food-storage molecule in plant cells.
3. Glucose molecules are bonded into large bundled strands to make cellulose, the structural molecule that builds cell walls in plants.</span>
The answer is heterotrophic
It was critical.. As you know cells are microscopic and cannot be seen with the naked eye. Without a microscope it probably wouldn't have been discovered.
B- Electron transport chain
