Dlease Indicate so at the next round of student questions Questions from 10/27/2

Question

Dlease Indicate so at the next round of student questions Questions from 10/27/2010 (Pathogenicity) 1. Which of the following bacterial pathogenic enzymes does not facilitate degradation of tisse? 2. 3. A) Streptokinase B) Coagulase C) Hyaluronidase What is not an example of parental portal entry? A) Needle stick B)Mosquito bite Exotoxins are typically A) Carbohydrates B) Sugars CProteins DLipids D) Collagenase E) All are correct C) mucous membrane DJAll are correct. E) Minerals 4. What does the A in AB toxin stand for? 5. Which of the following microorganisms produces endotoxin? 6. Which bacterium produces the hemolysin streptolysin? 7. What is the correct term for live microorganisms that are intentionally ingested for the benefit of human A) Active B) Agglutination C) Adhesion D) Accumulation A)E.coli B)Staphylococcusspec. C)Streptococcus spec. D) ? albicans A) S. pyogenes B)S. aureus C) C. diphteriae E) None of these is correct. E) All of these. D), C botulinum E) C. tetani health? A) Prebiotics B) Probiotics C) Antibiotics D) Macrobiotics E) Microbiotics 8. If a particular disease occurs only occasionally it is called A) sporadic disease. B) endemic disease. ) epidemic disease. D) pandemic disease In the invasion cycle what comes after penetration A) 9. Port of entry B) Damage to host tissue C) Port of exit D) Adherence 10. Which bacterial enzyme digests fibrin clots? A) Kinase B) Coagulase C) Hyaluronidase D) Collagenase E) None of the above 11. What is the main difference between the bacterial and fungal cell walls? A) Peptidoglycan in bacterial cell walls 8) Chitin in bacterial cell walls ) Both are the same D) None of the above. 12. Which part of the infection cycle involves microbes entering host cells? A) Port of entry B) Penetration C) Binding D) Opportunist 13. Which bacterial enzyme hydrolyzes collagen? B) Hyaluronidase C) Coagulase D) None of the above A) Kinases A) Lactobacilli Which toxin contains LPS and triggers fever? 14. With which of the following bacteria is an infant colonized first after birth? B) E. coli C) Streptococci D) All of the listed E) None of the listed 15. A) Endotoxin B) Exotoxin C) Both D) None

Explanation / Answer

1. B. Coagulase is the enzyme that doesn’t cause degradation of tissues. It makes coagulation of blood. Streptokinase degrades fibrin, collagenase degrades collagen, hyaluronidase degrades hyaluronic acid.

2. C. Mucus membrane itself is a portal entry. Mosquito bites and needle sticks are example of parenteral portal entry.

3. C. Exotoxins are proteins.

4. A. A in AB toxin stands for active component.

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