Blood must be maintained at a fairly constant pH between 7.35 - 7.45. One of the principal buffers responsible for doing this consists of carbonic acid in equilibrium with bicarbonate ions. If you breathe too deeply or rapidly, a condition known as hyperventilation may occur in which some muscles are temporarily paralyzed because the pH of the blood becomes too high. Explain why the pH changes in this way and why the condition can be corrected by breathing in a paper bag.

Read the following scenario to answer the following question. over the past 60 years, many amphibian species have experienced significant population declines, and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. when most populations of a wide-ranging amphibian species are lost and the few remaining populations are widely separated, we expect to see that a. the founder effect becomes increasingly important b. microevolution no longer occurs c. gene flow between populations is reduced d. artificial selection becomes a greater factor in microevolution

Building glycogen from glucose molecules is an example of what

The cluster of developing cells from conception until birth is called an