Question: 1. The cheetah, Acinonyx jubatus, is one of the fastest land
mammals. Cheetahs spend much of thei…


1. The cheetah, Acinonyx jubatus, is one of the fastest land
mammals. Cheetahs spend much of their time resting, but can run at
very high speeds when hunting. What changes can occur in the oxygen
transport cascade to accommodate this increase in metabolic rate?
Distinguish acute changes (with the onset of exercise) from chronic
changes (or acclimatization to increased O2 demand in any
mammal.

2. The oxygen transport cascade has two convective steps and two
diffusive steps alternating. Which of the following reasons
describes why convective movement of oxygen is needed?

a. Convection is the mass movement of fluid (both liquid and
gaseous)

b. Convection typically covers three or four orders of magnitude
more distance than diffusion

c. Diffusion is effective over distances up to 0.5 meters

d. Diffusion occurs through Brownian motion; diffusion of gas is
down its partialpressure gradient

e.All of the above

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