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Question:
A new opportunistic pathogen has been isolated from the stool of HIV-infected patients with persistent diarrhea. Microscopic examination indicates that this microorganism is spherical with a diameter of 3 to 5 micrometers. The presence of which of the following suggests that this is a eukaryotic microorganism?
Correct Answer: C. Introns in genes
Eukaryotic genes contain introns and exons. Exons contain the genetic information that is transcribed into RNA while introns are spliced out during processing. Prokaryotic genes do not contain introns.
Both prokaryotic and eukaryotic cells contain (A) cell membranes, (B) DNA, (D) mRNA, and (E) ribosomes.
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Category: Cell BiologyA new opportunistic pathogen has been isolated from the stool of HIV-infected patients with persistent diarrhea. Microscopic examination indicates that this microorganism is spherical with a diameter of 3 to 5 micrometers. The presence of which of the following suggests that this is a eukaryotic microorganism?
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