A Level Biology - Excretion

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Last updated: November 1, 2018

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Definition	Keyword
The removal of metabolic waste from the body	Excretion
A substance that is produced in excess by the metabolic processes in the cells	Metabolic waste
A series of biochemical reactions that convert ammonia to urea	Ornithine cycle
The functional unit of the kidney	Nephron
Filtration of the blood at a molecular level under pressure	Ultrafiltration

Definition	Keyword
A hormone that controls the permeability of the collecting duct walls	Antidiuretic hormone
A sensory receptor that detects changes in water potential	Osmoreceptor
The rate of which fluid enters the nephrons	Glomerular filtration rate
Antibodies made from one type of cell	Monoclonal antibodies
A mechanism used to artificially regulate the concentration of solutes in the blood	Renal dialysis