A. Capsule
B. Fimbria
C. Flagella
D. None of the above
Related Mcqs:
- 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 - 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 - 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 - Bacterial species which is protective or beneficial to the host is_______________?
A. Streptococcus sanguis
B. Porphyromonas gingivalis
C. Treponema denticola
D. Spirochetes - Bacterial cell does not possess___________________?
A. dna
B. Ribosome
C. Mitochondria
D. Cell wall - The attachment of the Actinomyces species to the tooth surface is facilitated by____________?
A. Fimbriae
B. Cilia
C. Flagella
D. Pseudopodia - 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 - 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 - 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 - 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
