Question:A poikilotherm is an organism whose internal temperature varies
based upon its environment - it regulates...
Question
A poikilotherm is an organism whose internal temperature varies
based upon its environment - it regulates...
A poikilotherm is an organism whose internal temperature varies
based upon its environment - it regulates body temperature by
basking or burrowing, for example a wood frog. In contrast, mammals
are homeotherms, organisms which maintain thermal homeostasis. Both
humans and frogs share similar enzymes. Say a metabolic reaction
takes the form A → B. Its standard transformed free energy change
(ΔG°) is 4.1 kJ mol-1 . (R = 8.3145 J K-1 mol-1 ).
Calculate the equilibrium constant for the reaction found in
the frog during a cool night (2 °C). (4 marks)
Calculate the equilibrium constant for the reaction in a human
(37°C). (4 marks)
When the concentration of A is 0.95 mM and the concentration of
B is 0.18 mM, what is the ΔG for i) the human ii) the frog (2 marks
each)
Explain if the reaction is spontaneous in the human and frog.
(2 marks)