MICROBIOLOGY FINAL EXAM QUESTIONS & ANSWERS. GUARANTEED PASS

MICROBIOLOGY FINAL EXAM QUESTIONS & ANSWERS. GUARANTEED PASS REVISION QUESTION 1. What is found in ALL prokaryotic organisms? CORRECT ANSWER: Ribosomes 2. What is the best description of the log phase of a bacterial growth curve? CORRECT ANSWER: Populations double under optimum conditions 3. Through feedback inhibition a noncompetitive inhibitor of enzyme activity would... CORRECT ANSWER: Bind to the allosteric site of the enzyme and stop the reaction 4. Yeast infections such as thrush are caused by what? CORRECT ANSWER: Candida albicans 5. The outer protein coat of a simple virus particle is called? CORRECT ANSWER: Capsid 6. In the disease cycle of animal viruses(Lysogenic), uncoating takes place between which two stages? CORRECT ANSWER: Penetration and biosynthesis 7. What would be used to sterilize disposable prepackaged gloves? CORRECT ANSWER: Gamma 8. Which type of hepatitis might you acquire by eating raw tomatoes or green onions at a restaurant? CORRECT ANSWER: Hepatitis A 9. The bacteria that causes meningitis usually attach and multiply in this area of the body CORRECT ANSWER: Upper respiratory system 10. Helper T cells... CORRECT ANSWER: Function in both humoral and cell-mediated immune function activation 11. The function of chemical substances such as histamine and leukotrienes would be CORRECT ANSWER: To stimulate inflammation 12. A cell is said to be _______________ when its cell wall is permeable to foreign DNA CORRECT ANSWER: Competent 13. An enzyme that assembles free nucleotides to make a molecule of RNA is CORRECT ANSWER: RNA polymerase 14. What do Rickettsias and Chlamydias have in common with viruses? CORRECT ANSWER: They are both obligated to live inside of a host cell 15. Who discovered penicillin? CORRECT ANSWER: Alexander Flemming 16. What is the difference between fimbriae and pili? CORRECT ANSWER Pili is involved in bacterial sex(conjugation), whereas fimbriae is just for attachment 17. New strains of the flu are made through _______________ _______________. CORRECT ANSWER: Antigenic shifts 18. Prokaryotic ribosome subunits = CORRECT ANSWER: 50 + 30 = 70 19. Eukaryotic ribosome subunits = CORRECT ANSWER: 60 + 40 = 80 20. Fermenters CORRECT ANSWER: Homolactic, Alcohol, Ethanol 21. The prefix for fungi is CORRECT ANSWER:Myco- could be used in the word Mycology (the study of fungi) or Mycoses (a fungi-related disease) 22. Endotoxin CORRECT ANSWER: Gram negative 23. Exotoxin CORRECT ANSWER: Gram positive 24. Lytic CORRECT ANSWER: The virus hijacks the cell and then destroys it 25. Lysogenic CORRECT ANSWER: The virus integrates itself into the DNA and stays there indefinitely 26. What is the least effective antibiotic? CORRECT ANSWER: Penicillin