The structure in involved in bacterial attachment to cell surface is_______________?

Related Mcqs:

1. Which of the following structures, found external to the bacterial cell wall, are involved in bacterial attachment to cell surfaces?

   A. Capsule
   B. Flagella
   C. Pili
   D. Mesosomes

2. Electron microscopic examination of the bacterial flora of necrotising ulcerative gingivitis indicates the presence of microorganisms within non-necrotic tissues in advance of other bacteria. The organisms involved are______________?

   A. Cocci
   B. Spirochetes
   C. Bacteriophages
   D. Filamentous rods

3. The bacterial cell wall has all of the following properties except______________?

   A. It consists of a mixed polymer called peptidoglycon
   B. It is the structure principally responsible for the reaction of gram staining
   C. It is a unique flexible plastic structure
   D. It contains D-isomers of amino acids

4. Bacterial species which is protective or beneficial to the host is_______________?

   A. Streptococcus sanguis
   B. Porphyromonas gingivalis
   C. Treponema denticola
   D. Spirochetes

5. Bacterial cell does not possess___________________?

   A. dna
   B. Ribosome
   C. Mitochondria
   D. Cell wall

6. The attachment of the Actinomyces species to the tooth surface is facilitated by____________?

   A. Fimbriae
   B. Cilia
   C. Flagella
   D. Pseudopodia

7. S. mutans is involved in dental caries initiation Other bacteria also involved is______________?

   A. S. Sarcinus
   B. S. macae
   C. S. sanguis
   D. S. salivarius

8. The key cell types involved in the acquired immunity include all EXCEPT________________?

   A. B lymphocytes
   B. Erythrocytes
   C. T lymphocytes
   D. Antigen presenting cells (APC

9. For uniform staining reaction, morphology and biochemical activity it is advisable to study bacterial cultures during the_____________?

   A. Lag phase
   B. Death phase
   C. Stationary phase
   D. Logarithmic phase

10. The following are applicable to bacterial genoms except________________?

    A. It is composed of DNA
    B. It doe not contain histones
    C. It is circular
    D. Its DNA has both introns and extrons