An ectotherm is more likely to survive at its upper lethal temperature than at its upper critical temperature. 

ECTOTHERM:  An ectotherm lives in a shallow lake.  During the winter, the average temperature of the lake is 5℃, and during the summer the average temperature of the lake is 20℃.  The ectotherm is able to acclimate to the seasonal variations in temperature; its cells make different isoforms of many metabolic enzymes in the summer versus the winter, such that its thermal optimum, To, shifts from 5℃ in the winter to 20℃ in the summer.  Which of the following statements about the ectotherm is CORRECT?

In an ectotherm, the metabolic rate at the upper critical temperature is greater than the metabolic rate at the pejus temperature. 

The optimal metabolic rate in an ectotherm is less than the maximum metabolic rate

Figure 2 on the coversheet shows the metabolic rates of several resting mallard ducks over a range of temperatures.   A best fit line between -20℃and 20℃ is shown; the line does not fit the data at temperatures greater than 20℃. Are the following statements about the figure TRUE or FALSE?

HEAT TRANSFER:   Which equation describes the resistance to heat transfer between two substances?

TEMPERATURES: If the temperature of an endothermic homeotherm falls below the ____________, its metabolic rate increases.

Mallard ducks do not produce metabolic heat at temperatures greater than 30℃

B. splendens hemoglobin is bound by more oxygen than T. trichopterus hemoglobin is at P02=50mmHg.  

The value of UCT-LCT (Upper Critical Temperature minus Lower Critical Temperature) will INCREASE.