Excretory Definitions Flashcards
1
Q
Metabolism
A
The chemical processes that occur with a living organism in order to maintain life.
- Metabolism converts the fuel in food eaten into energy need to power everything we do, from moving, to think to growing
2
Q
Excretion
A
In living organisms and cells the process of eliminating or expelling waste matter. Metabolic waste is eliminated from an organism.
3
Q
Ammonia (NH3)
A
A colourless gas composed of nitrogen and hydrogen bonds. Nitrogenous waste.
4
Q
Urea
A
- Main nitrogenous breakdown product of protein metabolism in mammals and is excreted in urine.
5
Q
Uric Acid
A
- Created when body breaks down purines.
- Purines- produced in body and found in some food and drinks
6
Q
Deamination
A
- The removal of an amine group from a molecule. Enzymes that catalyses this reaction are called deaminases.
7
Q
Urine
A
Liquid by- product of metabolism in humans
Urination- urine being excreted through the urethra
8
Q
Renal System
A
- Elimates waste from the body
- Regulates blood volume
- Blood pressure
- Control levels of electrolytes and metabolites
- Regulates blood pH
