A. 1
B. 2
C. 3
D. 4
✅ The correct answer is option 4.
Microbiology
Normal ratio of CD4 (T4) : CD8 (T8) is_________________?
A. 2:1
B. 1:2
C. 3:1
D. 1:3
✅ The correct answer is option 2:1.
A child presents with infective skin lesions of the leg. Culture was done which showed gram positive cocci in chains and haemolytic colonies. Which of the following tests will best identify the organism ?
A. Bile solubility
B. Optochin sensitivity
C. Bacitracin sensitivity
D. Cataslase positive
✅ The correct answer is option Bacitracin sensitivity.
What is the sequence which a retro virus follows on entering a host cell ?
A. RNA -DNA-RNA
B. RNA-DNA
C. DNA-RNA
D. DNA-RNA-DNA
✅ The correct answer is option RNA -DNA-RNA.
Operation theatres are sterilized by_____________?
A. Carbolic acid spraying
B. Washing with soap and water
C. Formaldehyde fumigation
D. ETO gas
✅ The correct answer is option Formaldehyde fumigation.
Immunoglobulin consists of________________?
A. 2 light, 2 heavy chains
B. 1 heavy, 2 light chains
C. 1 light, 1 heavy chain
D. 3 light, 1 heavy chain
✅ The correct answer is option 2 light, 2 heavy chains.
Sterilisation is______________?
A. Pathogens killed but spores are not affected
B. Only pathogenic micro-organisms killed
C. Non-pathogenic killed
D. All pathogenic and non-pathogenic microorganisms killed
✅ The correct answer is option All pathogenic and non-pathogenic microorganisms killed.
The term animalcules to oral microorganisms is given by__________________?
A. Wd miller
B. Leumenhoek
C. Robertson
D. Socranci
✅ The correct answer is option Leumenhoek.
All of the following are true of streptococcus except_____________?
A. It’s group of lactic acid production bacteria
B. Shows adherence to dental enamel
C. Most common in humans
D. Most common is animals
✅ The correct answer is option It’s group of lactic acid production bacteria.
Common name for Trichuris trichura________________?
A. Round worm
B. Whip worm
C. Tape worm
D. Seat woman
✅ The correct answer is option Whip worm.