The immune complexes that are not removed by macrophages are:

A. intermediate sized
B. very small
C. large
D. all of the above


Answer: A. intermediate sized

Biology & Microbiology

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The ability to process information from the environment _______________

A. is a trait unique to multicellular organisms B. is a trait unique to eukaryotes C. requires a brain and spinal cord D. is characteristic of all types of organisms E. is unique to primates

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When the electrons from reduced cofactors are transferred to oxygen in mitochondria, the process is coupled to the formation of _______ molecules of ATP.

a. 2 b. 10-12 c. 22-24 d. 32-34

Biology & Microbiology

The Most Probable Number (MPN) method is used

A) to estimate numbers of cells in samples with a high density of bacterial cells. B) when samples contain obligate anaerobes. C) to estimate numbers of cells in samples with a low density of bacterial cells. D) to isolate autotrophic bacteria. E) to determine the generation time of bacterial isolates.

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The organisms that most specifically utilize light energy to make organic molecules from inorganic molecules are

A. photohemitrophs. B. heterotrophs. C. photoisotrophs. D. photoautotrophs. E. photoheterotrophs.

Biology & Microbiology