Filtration — Science definition
Forcing water and small dissolved molecules out of the blood under pressure, holding back cells and large proteins by size alone; nothing is selected at this stage.
Where it is taught
- Kidneys, Excretion & Internal Balance — Body Organization, Transport & Movement, Life Science & Scientific Inquiry, Grade 7
In use
Filtration forces water and small dissolved molecules out of the blood under pressure, leaving blood cells and large proteins behind because they are too big to pass.
Kidneys, Excretion & Internal Balance