Micro 2011

5 Written Questions

1. The number of people affected by a disease in a given population.
2. a procedure using bacteria to identify potential carcinogens
3. A component of the gram negative cell wall also called endotoxin
4. A culture medium designed suppress the growth of unwanted microbes and encourage the growth of wanted ones.
5. dinoflagellates.

5 Matching Questions

1. Amphitrichous
2. Passive immunity
3. ß-Lactamase
4. Rolling circle replication
5. Fermentation

1. a a single flagellum at both poles of the cell
2. b Immunity acquired by transfer from another person.
3. c The enzymatic degradation of carbohydrates to produce energy, in the absence of oxygen.
4. d acts against β-lactam ring found in penicillin based antibiotics.
5. e Conjugative. used plasmids of gram positive bacteria

5 Multiple Choice Questions

1. Transmission by under cooked food. Cysts develop in eye, brain and other tissues. Is a teratogen.
   1. Toxoplasma gondii
   2. Prophage
   3. Complement
   4. Acid fast stain
2. the minor change in one of the antigens due to mutation
   1. Viriod
   2. Tn
   3. Drift
   4. Vaccine
3. removal of microorganisms by physical means eg. Alcohol swap.
   1. IgM
   2. Viremia
   3. Degerming
   4. Viriod
4. The proliferation of pathogens in the blood, accompanied with fever, can cause organ damage.
   1. Septicemia
   2. Bacteraemia
   3. Selective media
   4. T cell
5. Gonorrhoea
   1. Neisseria meningitidis
   2. Peritrichous
   3. Microaerophile
   4. Nesseria gonorrhoeae

5 True/False Questions

1. Nosocomial infection → An infection that develops during the course of a hospital stay and was not present at the time the patient was admitted.

   True        False

2. R factor → Resistance factor - a bacterial plasmid carrying a genes that determine resistance to antibiotics.

   True        False

3. Obligate aerobes → require oxygen to survive.

   True        False

4. Prion → the minor change in one of the antigens due to mutation

   True        False

5. Complement → A group of serum proteins involved in the phagocytosis and lysis of bacteria

   True        False