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Mrs Thomas Comes to the Emergency Department Where You Work

question 35

Multiple Choice

Mrs. Thomas comes to the emergency department where you work, complaining of nausea and vomiting, bloody diarrhea, abdominal discomfort and fever. She tells you that she went out to a picnic the previous day, where barbecued chicken was served. Mrs. Thomas is a vegan, so she ate only salad. You think that she likely has salmonellosis, caused by the bacterium Salmonella enterica. However, the presence of blood in her stool causes you concern, and you want to rule out the possibility that patient has shigellosis, caused by Shigella bacterial species.
-You take a stool sample from Mrs. Thomas, and send it to the lab for analysis. You tell her that the technicians will do a variety of tests to confirm the identity of the organism causing her illness. The first thing that will be done is to inoculate some of her stool sample onto a medium called hektoen enteric (HE) agar. On this medium, Shigella species produce blue-green colonies, while Salmonella produces blue-green colonies with a black center, and most Gram-positive bacteria do not grow at all. You explain to Mrs. Thomas that this type of medium is called a(n) ________ medium.

Definitions:

Environmental Threats

are dangers that arise from environmental degradation or changes, posing risks to ecosystems, biodiversity, and human well-being.

Technological Imperialism

The dominance of technologically advanced countries in imposing their technologies and cultural values on less developed countries.

Recombinant Technology

A field in biotechnology that involves manipulating DNA sequences to create new genetic combinations for purposes including medicine, agriculture, and research.

Biotechnology

The use of living systems and organisms to develop or make products, or any technological application that uses biological systems, living organisms, or derivatives thereof.