List 4 ways to preserve foods. Why is radiation a useful tool and when may it be

Question

List 4 ways to preserve foods. Why is radiation a useful tool and when may it be used? What bacterial structure do both ionizing and UV radiation damage? A 26 year old female presents to the health clinic with a rash on her palms, soles and torso. She reports that two months prior to the consultation she had a painless ulcer in her genital area with elevated borders and a depressed center. Material collected from the genital lesion revealed spirochetes. The ulcer spontaneously without treatment within a few weeks. The patient also reports having had several sexual partners in the past 6 months and not always using safe sex practices. What is the probable diagnosis of this patient? What microorganism causes this disease? Is a vaccine available to help prevent this disease? Describe one way to prevent this disease? (Not vaccine, if you answered yes above) Which phase of the infection is the patient experiencing? A 65 year old homeless man visits your ER and presents with a cough. He complains of exhaustion, coughing up blood, night sweats, and weight loss. A smear of his sputum shows the presence of acid fast positive rods. What is the likely diagnosis of this patient? What bacteria causes this disease? Did his homelessness contribute to his acquiring this disease? Strong cell mediated immunity leads to the formation of what structure? What are the two key cells for production of this structure? Is antibiotic resistance a concern? A 33 yr old man comes to the clinic complaining about fever, exhaustion, headache and generalized body pain. You notice a red rash resembling a bulls-eye on his leg as you are examining him. While giving his history he explains that earlier this month he was a big hiking and camping trip. What disease do you suspect? What bacteria causes this disease? Describe the shape of the bacteria. How is this disease transmitted? What systems of the body are damaged by this infection?

Explanation / Answer

41. Food preservation is a technique to prevent the growth of bacteria fungi or any microorganisms, as well as slowing down the oxidation of fats . It can be done by :

1. Drying: vegetables and fruits can be dried using sunlight and wind .it prevents the decomposition of food products by removal of moisture.

2. Cooling : it preserves food by slowing down the growth and reproduction of microorganisms.

3. Boiling: boiling food liquid items kill microbes present in it thereby preserving them.

4. Salting : salting or curing removes moisture by osmosis and hence preventing the microbial growth.

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