2a - Level of organisation Flashcards
What are the levels of organisation (from smallest to largest)
1) organelle
2) cell
3) tissue
4) organ
5) organ system
6) organism
What is an organelle?
A component inside a cell that carries out a specific task
What is a cell?
Basic structural and functional unit of all living organisms
What is a tissue?
A group of similar cells carrying out a particular function
What is an organ?
A collection of different tissues that work together to perform a common function
Organ system
Groups of organs working together to perform an overall function for the organism
Organism
Several organ systems make up an organism
What level of organisation is a nucleus?
Organelle
What level of organisation is a heart?
Organ
What level of organisation is a human?
Organism
What level of organisation is a muscle?
Tissue
What level of organisation is the circulatory system?
Organ system
