2.1 principles of organisation
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14 Terms
a cell
the ‘basic building blocks’ that make up all living organisms.
each of these have a specific function.
they are often specialised/adapted to their specific function.
a tissue
a group of specialised cells with a similar structure and function
an organ
a group of different tissues working together to perform a specific function
an organ system
a group of organs that work together to perform a specific function, and are organised in a system.
lots of these work together to form an organism.
an organism
a group of organ systems working together to form a living being.
the order of organisation
cell → tissue → organ → organ system → organism
a type of cell
heart cell
a type of tissue
heart tissue
a type of organ
heart
a type of organ system
circulatory system
a type of organism
a human
an organelle
a small specialised structure that performs a specific function within a cell
a type of organelle
a nucleus
how are muscle cells adapted to their function
they contain special protein fibres which can change the length of the cell, allowing for contraction.
packed with mitochrondria to provide the energy needed for contraction.