Control of Temperature Flashcards
Why control internal temperature?
to ensure reactions can happen as effciently as possible without denaturation of proteins.
WHat are ectotherms
organisms that rely on external sources of heat to regulate its body temperature
When cold ectotherms …
they can move into the sun, move to a warm surface or expose more surface area to the sun
When hot ectotherms …
move into the shade, move underground or expose less surface area to the sun
What are endotherms
organisms that rely on metabolic reactions to regulate its body temperature
Endotherms when cold …
they can shiver, increase respiration rate, vasoconstrict and erect hairs or feathers
Endotherms when hot …
can sweat, pant, vasodilate.
Endotherms in permanently cold environments
need more food and use more energy than ectotherms.
Deamination reaction
amino acid + oxygen = keto acid + ammonia
Ornithine cycle
see photo
