Class notes
Biol 105 Chapter 47 Notes
- Course
- Bio 105
- Institution
- Queens College
This is a comprehensive and detailed note on Chapter 47 for Biol 105. *Essential Study Material!! *For you, at a price that's worth it!!
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Ventilation → gas from the external environmentPerfusion
- Moves the gasses internally
Respiratory diffusion talks about pressure and solubility
- Thinks about high to low
Gas is compressiable
Partial pressure
All the molecules that make up the gas each have a certain pressure
- Diffuse from a mixture where partial pressure is high to a mixture where it
is lower
Its a high to low concept as well
IN a liquid
- The amount of gas in the liquid depends on the P.P of the gas phase and the
solubility of the gas
Gas is going to leave the liquid → goes into a gaseous state based on solubility
and partial pressure
Air and water are meeting, having the air able to oxidate based on solubility
pressure.
Temp of a liquid will show how much gas will be there
^ solubility of gasses in a liquid
Trend is the same high PP to low PP
Frick law of diffusion
Q = rate of diffusion → gas going from one area to another
, A = area of diffusing surface → how fast diffusion is going to happen more area =
greater diffusion rate
P1 and P2 → particle pressure (high to low)
L = distance gas needs to travel
Diffusion rate of O2 in water is very slow
Aquatic invertebrates (different respiratory system) have to have an increase of
surface area
They develop different respiratory system
Very simple organisms never got a mechanism to diffuse oxygen and water
Sponge have cells surroundings water channels
Large animals have specialized called gills
Oxgygen content is higher in air compared to water
Air breathing animals
- Minimizes pathway allows diffusion faster
Water breathing animals
- Ectotherms (changing temp with the environment)
- As body temp increases metabolic rate rise as water temp increases
- The need for O2 increases while O2 concentration decreases in warmer
water
Graph shows that ^
Fish
The hotter the temp the more O2 you would need
Temp continue to rise in the ocean = not enough O2 in the water = very bad
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