During Passage Through the Large Intestine, a Trophozoite Will Often

question 68

Multiple Choice

During passage through the large intestine, a trophozoite will often secrete a case around itself, forming a cyst. Cysts contain four haploid nuclei. When cysts "hatch" within a new host, two trophozoites are released. Thus, which of the following must happen within the cyst, prior to hatching?
1) meiosis
2) nuclear division
3) S phase
4) binary fission

• A) 1 only
• B) 1 and 2
• C) 2 and 3
• D) 2 and 4
• E) 2, 3, and 4

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