Your muscles are equipped with the enzymes necessary to carry out aerobic cellular respiration and anaerobic lactic acid fermentation. explain why this dual capability is an adaptive advantage in a lifestyle that includes periods of rest interrupted with bouts of strenuous exercise that last for extended periods of time. your response should compare yield of atp per glucose molecule and dependence on o2 between the two pathways.

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

_tissues respond quickly to outside stimuli a) epithelia b)nervous c)muscular d)muscular and nervous