Question

6. In a Bio 207 lab you determine that the cost of transport for two fish from different species is 1 kJ/km for fish one, and 10 kJ/km for fish two. Provide an estimate of the swimming speed of each fish assuming that a) both fish have the same metabolic rate; b) fish two has a metabolic rate 10 times higher than the metabolic rate of fish one; and c) fish one has a metabolic rate that is 100 times smaller than the metabolic rate of fish two. Note that the ratio of metabolic rate to speed defines the cost of transport in units of energy/distance.

Answer 1

b) fish two has a metabolic rate 10 times higher than the metabolic rate of fish one.

Step-by-step explanation:

The fish one covers 1 kilometer distance by using 1 kilo Joule of energy while on the other hand, fish two covers consumes 10 kilo Joules of energy for covering the same distance i.e. one kilometer. This means that fish two has a metabolic rate 10 times higher than the metabolic rate of fish one. This high metabolic rate may be due to the higher mass of the fish two which needs more energy for the movement to cover distance of one kilometer.