The oxidized form of inorganic iron that results from microbial oxidative processes is ________.

A. nitrate ion
B. ferric ion
C. sulfate ion
D. ferrous ion


Answer: B

Biology & Microbiology

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George Beadle and Edward Tatum created a collection of mutants to study the following pathway

A mutant shows no growth on minimal media; however it shows growth if citrulline is provided. These results indicate the mutation would most likely be in the gene for: A. Enzyme I. B. Enzyme II. C. Enzyme III D. either Enzyme I or Enzyme II. E. either Enzyme II or Enzyme III.

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Where rivers slow and drop their sediment load they form deltas termed:

a. dendritic. b. coastal plain. c. tidal flats. d. sand bar. e. tombolos.

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Photoautotrophs use the energy stored in the products of photosynthesis directly to run the diverse reactions that sustain life

1.True 2.False

Biology & Microbiology

The underlying basis for an allergic reaction is ____

a. IgG production b. complement activation c. cytotoxic T cell activity d. over activity of mast cells e. IgA production

Biology & Microbiology