A. It is composed of DNA
B. It doe not contain histones
C. It is circular
D. Its DNA has both introns and extrons
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 - 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 - Chlamydia causes all of the following except________________?
A. Trachoma
B. Non-gonococcal urethritis
C. Pneumonia
D. Parotitis - Each of the following can cause food poisoning except________________?
A. Cl. difficile
B. Staphylococcus
C. Cl. welchii
D. Cl. botulinum - A diabetic patient developed cellulitis due to staphylococcus aureus, which was found to be Methicillin resistant on the antibiotic sensitivity testing. All of the following antibiotics will be appropriate EXCEPT________________?
A. Vancomycin
B. Imipenem
C. Teichoplanin
D. Linezolid - 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 structure in involved in bacterial attachment to cell surface is_______________?
A. Capsule
B. Fimbria
C. Flagella
D. None of the above - 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 - Subacute bacterial endocarditis is caused by_____________?
A. Streptococcus viridans
B. Haemolytic streptococci
C. Staphylococcus aureus
D. Nisseria - Bacterial species which is protective or beneficial to the host is_______________?
A. Streptococcus sanguis
B. Porphyromonas gingivalis
C. Treponema denticola
D. Spirochetes
