A man is brought to the hospital suffering from nausea, vomiting, and severe stomach cramps. He had recently returned from a hiking trip in northern Minnesota. A sample taken from the man shows a single-celled flagellate organism that lacks mitochondria but has two nuclei. This organism is a(n)

Question

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The description of a single-celled flagellate organism that lacks mitochondria but has two nuclei fits the characteristics of an excavate, a group of protists that includes organisms like Giardia lamblia, which can cause symptoms described in the scenario.

A Man Is Brought to the Hospital Suffering from Nausea