The investigator discovered that human\'s normal intestinal flora actually secre

Question

The investigator discovered that human's normal intestinal flora actually secrete substances that shut off expression of the Shiga toxin (Stx) in the E. coli. For this reason, antibiotic therapy is usually not used, and actually may make the infection worse. Describe why antibiotic use is actually not helpful in this situation? 26) What is the type of symbiotic relationship between STEC and the human? (3 points) 27) What is the type of symbiotic relationship between the intestinal flora and the human? Describe that relationship. (4 points)

Explanation / Answer

1. There are certain types of E. coli that cause disease by making a toxin called Shiga toxin. The "Shiga toxin-producing" E. coli is abbreviated as STEC. STEC live in the guts of ruminant animals, including cattle, goats, sheep, deer, and elk. The major source for human illnesses is cattle. Other kinds of animals, including pigs and birds, sometimes pick up STEC from the environment and may spread it. It is under mutualistsic symbiotic relationship.

2.Mutualism is when the relationship of two different species are equally benefited from the relationship. Bacteria have a a symbiotic relationship with humans, the exact way two organisms of two differents species exist in a relationship.

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.