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General Microbiology - 3 Questions
What is the typical stool color in bacillary dysentery?
1) Dark red
2) Bright red
3) Yellow
4) Green
Bacillary dysentery, primarily caused by Shigella species, is known for producing stool that is typically bright red in color due to the presence of blood and inflammatory cells. The intense red color is a result of the invasive nature of the bacteria, which damage the intestinal lining leading to bloody diarrhea.
What is the characteristic appearance of Bacillus anthracis in gelatin stab culture?1) Smooth liquefaction2) Inverted fir tree appearance3) No liquefaction4) Uniform turbidity
The inverted fir tree appearance is characteristic of Bacillus anthracis in gelatin stab culture.
Which test uses live Treponema pallidum as the antigen?
1) TPA test
2) TPI test
3) FTA test
4) TPHA test
TPI test: The Treponema pallidum immobilization (TPI) test involves using live T. pallidum as an antigen to detect antibodies in the patient's blood serum.
MCQ