Terminology Flashcards
1
Q
Metabolism
A
Chemical reactions that take place within the cells of an organism
2
Q
Photosynthesis
A
Plants, bacteria and protoctists make food by using CO2, H2O and sunlight
3
Q
Diffusion
A
Net movement of molecules from an area of high concentration to a low concentration
4
Q
Diffusion Gradient
A
The gradient in molecular concentration that allows diffusion to occur
5
Q
Gaseous exchange
A
The movement of gasses by diffusion across a barrier
6
Q
Trachea
A
The windpipe leading from the back of the mouth to the bronchi
7
Q
Bronchi
A
Airways in the lungs that lead from the trachea to the bronchioles
8
Q
Bronchioles
A
Airways in the lungs from the bronchi to the alveoli
9
Q
Alveoli
A
Small air sacs in the lungs
10
Q
Exchange Surface
A
Specialised surface adapted to make it easier for molecules to pass through
