Giardia and Trichomonas Are Unusual Eukaryotes Because They

question 21

Multiple Choice

Giardia and Trichomonas are unusual eukaryotes because they

• A) lack nuclei.
• B) do produce cysts.
• C) lack mitochondria.
• D) do not produce cysts.
• E) are motile.

---

Definitions:

Common Ancestor

The most recent individual from which all organisms in a group are directly descended.

Metabolic Processes

The complex series of chemical reactions within organisms that enable them to maintain life, including pathways for energy production, synthesis of new molecules, and breakdown of substances.

DNA

Deoxyribonucleic acid, a molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses.

Hardy-Weinberg Equilibrium

The principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.