According to the cell theory, all cells
come from other cells.
Describe the differences between prokaryotic and eukaryotic cells. Give an example of each type of cell.
What is the main job of the respiratory system?
delivering carbon monoxide to the important parts of the body.
pumping blood to the capillaries.
taking in oxygen for energy.
taking in carbon dioxide and delivering it to the cells.
What is the main job of the digestive system?
circulating nutrients through the blood.
breaking down food to convert to energy.
fighting infection and disease.
providing structure to the muscles.
What do hormones do?