1.1 describe the levels of organisation within organisms: organelle, cells, tissues, organs and systems

Organelle: a structure or part of a cell that has a particular function
Eg: nucleus, vacuole, mitochondria

Cell: the basic unit of structure and function in organisms
Eg: leaf palisade cell, muscle cell, white blood cell

Tissue: made up of cells that are similar in structure and function. 1+ type of cell. These cells work together to perform a particular function
Eg: muscle tissue, blood

Organ: 1+ type of tissue that work together to perform a specific activity
Eg: heart, lungs, liver

System: made up of two or more organs that work together to perform an activity
Eg: circulatory system, respiratory system

Organisms: entire living thing that can carry out all basic life processes
Eg: human, worm, sunflower

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