3.9 The Kidney And Osmoregulation Flashcards
1
Q
Excretion
A
The removal of metabolic waste products
- Nitrogenous waste is produced from protein metabolism
2
Q
Who secretes Ammonia?
A
Fish
3
Q
Who secrets Urea?
A
Mammals
4
Q
Who secretes Uric Acid?
A
Birds
5
Q
Urea
A
- Formed in liver by combining Ammonia and Carbon Dioxide
- Water soluble and toxic
6
Q
Urea and Vitalism
A
- 1828 Frederick Wöhler artificial synthesis of Urea
- First synthesis of organic molecule
- Laid foundation for disproving of theory of Vitalism
7
Q
Osmoregulator
A
Maintain a constant internal environment that is independent of the external environment
8
Q
Osmoconformer
A
Maintain an internal environment that is isotonic to the external environment
- Usually marine invertebrates
9
Q
Osmoconformer Example
A
Cnidarians
10
Q
Osmoregulator Example
A
Paramecium
