Science QUiz

1. Bioleaching is done by
a) Protozoa
b) Bacteria
c) Algae
d) All of the above

2. The apparatus used to maintain in a continuous culture
a) Chemostat
b) Autostat
c) Thermostat
d) Both a and c

3. The most infectious food borne disease is
a) Tetanus
b) Dysentery
c) Gas gangrene
d) Botulism

4. Spirochete is
a) Gonococci
b) Staphylococci
c) Treponema pallidum
d) Streptococci

5. Which of the following is the characteristic of bacterial spore?
a) Highly refractile
b) Usually dehydrated
c) Sensitive to formaldehyde
d) All of these

6. Fungi differs with bacteria in that it _______
a) Contain no peptidoglycan
b) Are prokaryotic
c) Susceptible to griseofulvin
d) Have nuclear membranes
e) All of these

7. The largest protozoa is ___________
a) Balantidium coli
b) Entamoeba coli
c) Trichomonus vaginalis
d) Toxoplasma gond

8. Anthrax is a
a) Vector borne
b) Zoonotic infection
c) Wound bone
d) Soil borne

9. Lysol is a
a) Sterilent
b) Disinfectant
c) Antiseptic
d) Antifungal agent

10. In autoclave, the principle involved is
a) Dry heat
b) Moist heat
c) Steam under pressure
d) Both b and c

11. At the temperature 160oC for one hour, complete sterilization occurs in
a) Autoclave
b) Laminar flow
c) Incubator
d) Hot air oven