How do organelles help your body?

Organelles are specialized structures within eukaryotic cells. Each organelle is responsible for a specific function within the cell. For example, mitochondria are responsible primarily for energy production and hence are called the power houses of the cell. A cell is made up of a number of organelles that work together to ensure the survival and functioning of the cell. A tissue consists of a number of cells that are similar in structure and function. An organ (such as the heart, kidneys, etc.) is made up of a number of tissues working towards a common function. An organ system (such as the circulatory system, etc.) is made up of a number of organs that work in conjunction. An organism, such as a human being, consists of a number of organ systems working together to carry out the complex activities of life. Hence, an organism is dependent on the activities of organelle for all its operations starting at the cellular level. 

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