Temperature Flashcards
What did Claude Bernard do?
introduced the idea of constancy
What did Bradford Cannon do?
introduced the idea of organisms responding to their environment
What did Freidrich Walter do?
he proved unity in biological and natural laws, disproving the idea of a biological “vital force”
What does the Arrhenius reaction represent?
how reactions respond to temperature (in physics)
What does the Q10 relationship represent?
How biological reactions respond to changes in temperature in nature - an increase of 10 degrees C brings a 2/3x increase in function
What is a biological system?
summation of multiple enzyme-catalysed reactions
Why is the Q10 relationship different to the Arrhenius relationship?
The Q10 relationship comes from the summation of a variety of catalytic enzyme functions and structures with different thermal tolerances.
What phenomenon can be observed in the Lanice conchilega?
the phenomenon of acclimations - animals expressing different enzymes depending on selection from temperature
Why is it especially important for aquatic organisms to have good heat conservation mechanisms?
water has a relatively high heat capacity
Give 2 adaptation of aquatic vertebrates to conserve heat energy?
counter-current exchange system in blood vessels in extremities, larger fish generate a core “hot spot” where certain enzymes can function
