How many pyruvic acid molecules are generated during the oxidation of one glucose molecule during cellular respiration?

A) one B) two C) zero D) three E) four


Answer: B

Biology & Microbiology

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Which of the following statements best describes secondary endosymbiosis?

A. A host cell manufactures its own symbiont and later acquires another one by phagocytosis. B. A host cell ingests another cell already containing a primary symbiont. C. A host cell ingests two or more symbionts simultaneously. D. A host cell ingests one symbiont and then later ingests another one. E. All of the other choices provided are incorrect.

Biology & Microbiology

If the objective lenses of a microscope can be changed without losing focus on the specimen, they are said to be

A. optifocal. B. parfocal. C. equifocal. D. totifocal.

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The type of viral infection in which a virus enters a host cell and then remains dormant (hidden) in a host cell's chromosome is:

a. A rare form of viral infection b. A transgenic infection c. A lytic infection d. A systematic infection e. A lysogenic infection

Biology & Microbiology

Which of the bacteria that we have studied are known to have possible septicemia

A. S. aureus B. Clostridium botulinum C. A and B only D. E. coli E. Salmonella typhi F. Vibrio cholerae G. D and E H. D, E, and F

Biology & Microbiology