Which is not a density-dependent, growth-limiting factor?
a. predation
b. drought
c. parasitism
d. competition
e. disease
b
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In the glucose activation stage of glycolysis, glucose receives a phosphate group from ATP. This reaction is
A) endergonic. B) exergonic. C) fermentation. D) respiration.
Allopatric speciation occurs because a population
A. becomes geographically isolated and undergoes genetic change. B. becomes extinct and is replaced by a population of a different species. C. shows little genetic change from generation to generation. D. experiences hybrid sterility. E. merges with another population of the same species.
Why is the dialysate continually replaced in hemodialysis?
A. because it is lost by urination B. because it biodegrades rapidly C. because it is easily infected D. because it enters the body and is absorbed E. to maintain a favorable concentration gradient with the blood
Fermentors have a built-in device called a sparger. What does a sparger do?
A. It monitors the pH of the medium. B. It aerates the medium to promote aerobic growth. C. It monitors the temperature of the medium. D. It adds a continuous supply of glucose to the media. E. It stirs the mixture of microbe and nutrients.