1. Short notes (5*3=15)
1. Difference between gram positive and gram negative cell wall.
2. R- plasma.
3. Bacterial growth curve.
4. Difference between innate and acquired immunity
5. IgM Antibody
2. MCQs (5*1=5)
Q.1 which of the following is false about Corynebacterium diphtheria.
a. Club-shaped gram-positive bacilli
b. Pathogenesis is mediated by diphtheria toxin
c. Albert staining of the throat swab is useful for laboratory diagnosis
d. Treatment is mainly based on administration of antibiotics.
Q.2 Obligate intracellular bacteria are all, except
a. M. leprae
b. Chlamydia
c. Rickettsia
d. M. tuberculosis
3. Q.3 Highest useful magnification available in light microscope is
a. 100X b. 1000X c. 400X d. 2000X
Q.4 Which is an enriched medium?
a. Selenite F broth
b. Peptone water
C. MacConkey agar
d. chocolate agar
Q.5 Best phase to obtain toxins from bacteria in bacterial growth curve is:
a. Lag phase
b. Log phase
C. Stationary phase
d. Decline phase
