You wish to obtain a pure mitochondria sample from lysed cells. The best way to obtain this sample would be

A) centrifugation.
B) chromatography.
C) polyacrylamide gel electrophoresis.
D) agarose gel electrophoresis.
E) both choices A and C


A) centrifugation.

Biology & Microbiology

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In order to generate one glucose molecule, the Calvin cycle has to turn how many times?  

A.  1 B.  2 C.  3 D.  6 E.  12

Biology & Microbiology

Cyclospora cayetanensis has, so far, not been identified with an animal source

Indicate whether this statement is TRUE or FALSE.

Biology & Microbiology

Plant photosynthesis and the consumption of plants by animals are both examples of what unifying principle of life?

A. All living organisms use energy. B. All living organisms maintain organization. C. All living organisms have evolved over the course of many generations. D. All living organisms maintain some level of homeostasis. E. All living organisms are composed of similar structures.

Biology & Microbiology

Deeply weathered soils, with no distinct horizons characteristic of the tropical rain forest, are

A) mollisols. B) andosols. C) oxisols. D) alfisols.

Biology & Microbiology