MDS PREP
What is the typical pH range for optimal growth of meningococci?
1) 6.8-7.0
2) 7.4-7.6
3) 8.0-8.2
4) 7.0-7.2
The optimal pH range for the growth of meningococci is 7.4-7.6.
which of the following is true regarding the pathogenicity of the mycobacterium species:
1 M. tb is more pathogenic than m.bovis to humans
2 M.kansaaii can cause disease indistinguishable from tuberculosis
3 M.africanum is acquired from the enviourmenatal source
4 M.marinum is responsible for tubercular lymphadenopathy
Microbiology
Answer: 1
Fluoride affects the metabolism of oral bacteria by inhibiting an enzyme in which of the following pathways?
1. Glycolytic
2. Folic acid
3. Citric acid
4. Aspartate biosynthetic
Microbiology
Answer: 1
All bacterial activity has one thing common, the production of
1. odor
2. pigment
3. light
4 heat
Microbiology
Answer: 4
Aerobic microbial metabolism is characterized by which of the following end products?
1 Hydrogen and pyruvate
2 Lactic acid
3. Carbondioxide and water
4. Fatty acids
Microbiology
Answer: 3
When a diagnostic test is used in "series" mode, then:
1. Sensitivity increases but specificity decreases.
2. Specificity increases but sensitivity decreases.
3. Both sensitivity and specificity increase
4. Both sensitivity and specificity decrease