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klemol [59]
3 years ago
5

In a single day, two 19 year old women and one 20 year old man sought treatment at a university health clinic, complaining of ac

ute diarrhea, nausea and vomiting. No blood was found in their stools. One of the women was found to have a UTI. All three had eaten lunch at a nearby health food store the previous day. The man had a turkey sandwich with tomato, sprouts, pickles and sunflower seeds. One woman had a pocket sandwich with turkey,sprouts, and mandarin oranges; the other woman had the lunch special, described in the menu as a "delightful garden salad of fresh organic lettuces, sprouts, tomatoes, and cucumbers with zesty raspberry vinaigrette dressing". All had bottled water to drink. Which of the foods is the most likely source of the infections? What media would you use to culture and isolate enteric contaminants in the food? Which enteric bacteria could cause these symptoms? What would be the appearance of this organism on this media?
Biology
1 answer:
LuckyWell [14K]3 years ago
7 0

Answer:

delightful garden salad of fresh organic lettuces, sprouts, tomatoes, and cucumbers with zesty raspberry vinaigrette dressing.

Stool MCs is recommended

Salmonella typhi

It appears pink rod. Its a gram negative bacteria

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The effect does the chemical referred to as a mutagen has is it causes a permanent change in the genetic material (dna) and is denoted as option D.

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This is referred to as deoxyribonucleic acid and is the genetic material in living organisms.

Mutagen on the other hand are agents which cause mutations which means alterations in the DNA of organisms. It affects the transcription and replication of the DNA thereby leading to cell death and other effects such as diseased condition.

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Explanation:

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  • Adenine is one of the five nitrogenous bases that are part of nucleic acids (DNA and RNA) and in the genetic code is represented by the letter A. The other four bases are guanine, cytosine, thymine and uracil. Adenine is always paired with thymine in DNA.
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  • Adenine and thymine are complementary (A = T), linked by two hydrogen bridges, while guanine and cytosine (G≡C) are linked by three hydrogen bridges. Since RNA does not contain thymine, complementarity is established between adenine and uracil (A = U) by two hydrogen bridges.
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