Pasteur discovered that microbes can cause food spoilage. His solution to protect wine from spoiling was a process called pasteurization, which is based on what principle?
a. Heating beer and wine just enough to kill those organisms causing the spoilage
b. The destruction of all microbes in the wine
c. Filtration of the wine to remove all microbes
d. Addition of specific disinfectants and food preservatives that prevent the spoilage
Answer: a. Heating beer and wine just enough to kill those organisms causing the spoilage
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The importance of the citric acid cycle in energy production is the formation of significant amounts of ________.
Fill in the blank(s) with the appropriate word(s).
How do we know that hominids did not have
splayed-out big toes? a. Mary Leakey found footprints fossilized from soft volcanic ash. b. Some of the great apes have lost their splayed toe features. c. Complete fossils of these early hominids have been discovered. d. Examples of these hominids exist in New Guinea. e. None of these are correct.
In the successional sere on abandoned fields in the Piedmont of North Carolina, self-inhibition is a common mechanism determining the course of community development. In which of the following species is self-inhibition caused by growth inhibitors produced by decaying roots?
A) horseweed B) aster C) pine D) all of the above
All of the following factors would cause potassium to shift into the cell, EXCEPT:
A) alkalosis. B) epinephrine release. C) increased vagal tone. D) insulin administration.