Use the Following Information to Answer the Question

question 52

Multiple Choice

Use the following information to answer the question.
Giardia intestinalis is an intestinal parasite of humans and other mammals that causes intestinal ailments in most people who ingest the cysts. Upon ingestion, each cyst releases two motile cells, called trophozoites. These attach to the small intestine's lining via a ventral adhesive disk. The trophozoites anaerobically metabolize glucose from the host's intestinal contents to produce ATP. Reproduction is completely asexual, occurring by longitudinal binary fission of trophozoites, with each daughter cell receiving two haploid nuclei (n = 5) . A trophozoite will often encyst as it passes into the large intestine by secreting around itself a case that is resistant to cold, heat, and dehydration. Infection usually occurs by drinking untreated water that contains cysts.
Giardia's mitosome can be said to be "doubly degenerate," because it is a degenerate type of ________, an organelle that is itself a degenerate form of ________.

• A) nucleus; archaean
• B) nucleus; bacterium
• C) mitochondria; proteobacterium
• D) mitochondria; spirochete

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Definitions:

Skewed

Skewed refers to a distribution that is asymmetrical, where data points are more concentrated on one side of the scale, leading to a long tail on the opposite side.

Modality

Pertains to the way or method by which something is encountered, manifested, or articulated.

Multimodal

Pertaining to or utilizing more than one mode or method of transportation, communication, or expression.

American Psychological Association

A leading scientific and professional organization representing psychology in the United States, dedicated to advancing the creation, communication, and application of psychological knowledge to benefit society and improve lives.