Compare and contrast the advantages and disadvantages of gas exchange in terrestrial and aquatic environments. What will be an ideal response?
In terrestrial environments, oxygen and carbon dioxide are in the air, whereas in aquatic
environments they are dissolved in water. Compared to water, gas exchange in air is
advantageous because 1) air contains a higher concentration of O2, 2) O2 diffuses much
faster, and 3) air is less dense and less viscous and consequently less energy is required to
move O2 across a surface. A major disadvantage of gas exchange in terrestrial environments
is the potential for desiccation. Because respiratory surfaces must be kept moist, the
challenge faced by terrestrial animals is to efficiently exchange gases without losing too
much water by evaporation from these moist surfaces.
You might also like to view...
Sidearms are attached to ________.
A) B tubules B) A tubules C) central pairs D) radial spokes E) interdoublet nexin
Four of the five answers listed below are characteristic of meiosis. Select the exception
a. involves two divisions b. reduces the number of chromosomes c. results in producing genetically identical cells d. produces haploid cells e. occurs in the gonads
The change in frequency of traits in a population is known as _____________
Fill in the blank(s) with the appropriate word(s).
The power used by most bacterial flagellar motors is produced by ________.
A. ATP hydrolysis B. synthesis of glucose C. proton motive force (PMF) D. All of the choices are correct.