Question

Use the information in the following paragraph to answer the question(s) below.

A hypothetical bacterium swims among human intestinal contents until it finds a suitable location on the intestinal lining. It adheres to the intestinal lining using a feature that also protects it from phagocytes, bacteriophages, and dehydration. Fecal matter from a human in whose intestine this bacterium lives can spread the bacterium, even after being mixed with water and boiled. The bacterium is not susceptible to the penicillin family of antibiotics. It contains no plasmids and relatively little peptidoglycan.
This bacterium derives nutrition by digesting human intestinal contents. Thus, this bacterium is an _____.
A) aerobic chemoheterotroph
B) aerobic chemoautotroph
C) anaerobic chemoheterotroph
D) anaerobic chemoautotroph

Answer 1

The correct answer is- C) anaerobic chemoheterotroph

Step-by-step explanation:

Chemoheterotrophs are the organisms that consume carbon compounds like carbohydrates, lipids, etc which are already synthesized by other organisms. Anaerobes are the organisms that live in an oxygen-deficient environment.

The human intestine is that part of the human body which is anaerobic in nature therefore in human intestine lots of anaerobic bacteria are present.

So as the hypothetical bacterium is present in the human intestine which has the anaerobic condition and derive nutrition from host intestinal contents therefore this bacteria must be an anaerobic chemoheterotroph.