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:

Philanthropic

Relating to the act of giving money, goods, time, or effort to support a charitable cause, usually over an extended period of time and to further a social good.

Whistle-blowing

The act of exposing any kind of information or activity that is deemed illegal, unethical, or not correct within an organization.

Ethical Conscience

An innate sense or a developed mindset that informs an individual's judgments and actions based on moral principles or ethical considerations.

Devil's Advocacy

A critical thinking technique that involves arguing against a prevailing idea or decision as a way to explore alternative viewpoints and identify potential flaws.