Chapter 42 Flashcards
What is ventillation?
Movement of water/air through a specialized gas exchange organ
What is diffusion at the respiratory surface? (2 components)
Oxygen moves from air/water into blood
Carbon dioxide moves from blood into air/water
What is circulation?
Transport of dissolved oxygen and carbon dioxide via circulatory system
What is diffusion at the tissues? (2 components)
Oxygen moves from blood to tissues
Carbon dioxide moves from tissues to blood
What is cellular respiration? (2 components)
Cell’s use of oxygen
Production of carbon dioxide
What is partial pressure?
Pressure of a particular gas in a mixture of gases
Does oxygen have a high or low solubility in water?
Low
How do animals compensate for low solubility of oxygen in water?
They have a molecule in their blood that binds to oxygen and delivers it to tissues
As the temperature of water increases, the amount of gas that dissolves in it ______ (decreases or increases)
decreases
Does freshwater or saltwater have more oxygen?
Freshwater, more solute = less oxygen
Gases move from _____ partial pressure to ____ partial pressure
high to low
Will a habitat with a lot of photosynthetic organisms be oxygen-rich or oxygen-depleted?
Oxygen-rich
Why do bogs have low oxygen content?
Decomposers use up most of the oxygen for respiration
Does the surface or deeper part of water have more oxygen?
Surface
Does shallow or deep water have more oxygen content? Why?
Shallow. Shallower areas have a higher surface area to volume ratio
