animal physiology (excretion) challenge #5

Question 1

what are two of the byproducts of metabolism

Answer 1

1) CO2 (from pyruvate oxidation and krebs cycle- removed via gas exchange)
2) nitrogen compounds (protein digestion– proteins are simplified into amino acids)

Question 2

what happens when an animal consumes proteins?

Answer 2

Digestive processes hydrolyze proteins into amino acids

Question 3

what are the three uses of These amino acids?

Answer 3

1. To synthesize new proteins
2. Fuel reactions leading to 
ATP synthesis
3. Serve as precursors for the 
synthesis of other biomolecules

Question 4

Nitrogen is converted into what 3 molecules before being passed from the body?

Answer 4

1. Ammonia
2. Urea
3. Uric Acid

Question 5

the excretory system is vital in the removal of

Answer 5

excess nitrogen

Question 6

This system is also vital in other important in 2 other biological functions

Answer 6

1. Maintenance of water-salt balance

2. Maintenance of acid-base balance

Question 7

what is the Maintenance of water-salt balance?

Answer 7

Water: concentrations of blood and extracellular fluids
Minerals: concentrations of sodium, potassium, calcium, etc.

Question 8

what is water balance

Answer 8

Maintenance of equalizing the rate of water loss and water gain

Question 9

what is mineral balance

Answer 9

Maintenance of equalizing the rate of mineral loss and mineral gain