Thermoregulation Flashcards
Define ectotherms
body temperature is proportional to the external temperature
Define endotherms
maintain a metabolically favorable temperature
Which one has a higher metabolicrate than the other one?
Endotherms have a higher metabolic rate than ectotherms
What is the relationship between body size and metabolic rate?
For endotherms, as body mass increases, metabolic rate decreases. SA:V decreases as body size increases. Larger endotherms struggle with losing heat and are better at keeping heat.
Smaller endotherms have increase SA:V, lose lots of heat thus need a higher metabolism
What is the relationship between activity rate and metabolic rate?
The more active animals are the higher the metabolic rate because they need more energy. As they build more heat inside of them due to more ATP production, the body starts procedures to cool the body down.
What does the Q10 value mean?
how much a reaction rate increases for every 10 degree Celsius increase in temperature
Relationship between environmental temperature and metabolic rate for endotherms
As environmental temperature decreases, metabolic rate increases. It also increases when temperature decreases because, it is working hard to get rid of the energy
Relationship between metabolic rate and environmental temperature for ectotherms
It is directly proportional. As temperature increases, metabolic rate increase
Relationship between environmental temperature and body temperature for ectotherms
It is linear and proportional
Relationship between environmental temperature and body temperature for endotherms
horizontal; environmental temperature does not effect internal temperature
Topor
decreased activity and metabolism to survive harsh conditions and conserve metabolism
Estivation
torpor in the summer months, high temperatures and little water
What are the disadvantages of ectotherms?
They can’t stay in environments that are too hot or cold because it would hurt them. They have to do behavioral shifts to go to maintain their metabolism. While, endotherms can use cell Respiration and behavior to meet their needs