2.3 Metabolic Rate Flashcards
1
Q
metabolic rate can be measured as (3)
A
- volume of oxygen consumed/unit of time
- volume of carbon dioxide produced/unit of time
- heat produced/unit of time
2
Q
metabolic rate can be measured using (4)
A
- respirometer
- calorimeter
- CO2 probe
- O2 probe
3
Q
different organisms have different metabolic rated because
A
they require different efficiency of oxygen delivery to their cells
4
Q
fastest to slowest metabolic rate
A
- birds & mammals
- reptiles & amphibians
- fish
5
Q
bird & mammal circulatory system
A
- complete double circulatory system
- 2 atria & 2 ventricles
6
Q
reptile & amphibian circulatory system
A
- incomplete double circulatory system
- 2 atria & 1 ventricle
7
Q
fish circulatory system
A
- single circulatory system
- 1 atrium & 1 ventricle
8
Q
complete double circulatory systems enable…
A
higher metabolic rates to be maintained
9
Q
why is a complete double circulatory system more efficient?
A
- there is no mixing of oxygenated and deoxygenated blood
- oxygenated blood can be pumped out at a higher pressure
- this enables more efficient oxygen delivery to cells
