Select the parts of the cells to see if you can name them. These include parts the chloroplast and nucleus. Different organelles do different jobs in the cell. For example, proteins are made in an organelle called a ribosome. Energy is released organelles called mitochondria.
Organelles allow unicells to perform all the life processes.
Multicellular organisms , such as ourselves, are made from specialised cells . These cells too have organelles, but different cells also do different jobs. Groups of cells of the same type are called tissues . Groups of tissues work together as organs to perform particular functions. Then again, organs in the digestive system work together to make an organ system .