2.3 metabolic rate Flashcards
Define metabolic rate
Quantity of energy consumed by an organism over a certain time frame
What does a respirometer compare
-difference in oxygen concentration
-difference in carbon dioxide concentration
-temperature
Entering and leave the chamber
Explain what a respirometer is
A chamber where a continuous stream of air is pumped through
How can metabolic rate be measured
- oxygen consumption
- carbon dioxide output
- heat production
What is a calorimeter
An insulated container with a pipe that water flows through
What does a calorimeter compare
The water temperature coming in and going out
What circulatory system do birds and mammals have
Complete double
What organisms have a complete double circulatory system
- birds
- mammals
What circulatory system do reptiles and amphibians have
Incomplete double
What organisms have an incomplete double circulatory system
- reptiles
- amphibians
What circulatory system do fish have
Single
What organism has a single circulatory system
Fish
What organism has a higher metabolic rate
- mammals
- birds
What organism has a lower metabolic rate
Fish
Define what is a complete double circulatory system
- blood enters the heart twice
- left and right side are separated by a septum
In what circulatory system does the blood enter the heart twice and has a septum separating the left and right side
Complete double
What structure does a complete double circulatory system have
- two atria
- two ventricles
What circulatory system has to atria and two ventricles
Complete double
Define what is an incomplete double circulatory system
- blood enters the heart twice
- there is no septum
In what circulatory system does blood enter the heart twice but does not have a septum
Incomplete double
What structure does an incomplete double circulatory system have
- two atria
- one ventricle
Define what a single circulatory system is
Blood only enters the heart once in a cycle
In what circulatory system does blood enter the heart once
Single
What structure does a single circulatory system have
- one atrium
- one ventricle
Why can a double complete circulatory system maintain a higher metabolic rate
There is no mixing of oxygenated and deoxygenated blood
