A) Polysaccharides B) Lipopolysaccharides C) Proteins D) Nucleic acids
A) Pseudomonas aeruginosa B) Bacillus anthracis C) Escherichia coli D) Staphylococcus aureus
A) India ink staining B) Crystal violet staining C) Gram staining D) Methylene blue staining
A) By degrading antibodies B) By increasing motility C) By preventing phagocytosis D) By producing toxins
A) Forming biofilms B) Producing antibiotics C) Preventing drying out due to high water content D) Releasing enzymes that degrade host tissues
A) They have no effect on biofilm formation B) They promote rapid biofilm growth C) They always enhance biofilm stability D) They can negatively impact biofilm formation, especially with thick capsules
A) Outer membrane B) Glycocalyx C) Cell wall D) Peptidoglycan layer
A) Both gram-negative and gram-positive bacteria B) Gram-negative bacteria C) Only in non-bacterial cells D) Gram-positive bacteria
A) It only aids in motility B) It helps bacteria adhere to surfaces C) It has no effect on adhesion D) It prevents adhesion to surfaces
A) Promotion of beneficial bacteria B) Reduction of pathogenicity C) Enhancement of the ability to cause disease D) Inhibition of bacterial growth
A) General immune response B) Capsule-specific antibody C) No antibodies are needed D) Antibodies against lipopolysaccharides
A) No, it does not result in immunity to other types B) Only if the capsules are similar C) Immunity is always specific to one bacterium D) Yes, it provides broad immunity
A) Oxygen availability B) Nutrient absorption C) Bacterial viruses and hydrophobic toxic materials like detergents D) Only immune cells
A) Streptococcus pneumoniae B) Escherichia coli C) Klebsiella pneumoniae D) Neisseria meningitidis
A) Quellung reaction B) India ink staining C) Maneval's capsule stain D) Gram staining
A) Haemophilus influenzae B) Acinetobacter baumannii C) Staphylococcus epidermidis D) Klebsiella pneumoniae
A) Streptococcus pyogenes B) Bacillus megaterium C) Salmonella D) Pseudomonas aeruginosa
A) A bluish-grey background B) A clear halo around the bacterium C) A black dot D) A pink-stained area
A) Maneval's capsule stain B) Quellung reaction C) India ink staining D) Gram staining
A) Cryptococcus neoformans B) Staphylococcus aureus C) Bacillus anthracis D) Lactococcus garvieae
A) Bacillus megaterium B) Salmonella C) Streptococcus agalactiae D) Pseudomonas aeruginosa
A) Bacillus megaterium B) Lactococcus garvieae C) Neisseria meningitidis D) Klebsiella pneumoniae
A) Haemophilus influenzae type b B) Escherichia coli (in all strains) C) Staphylococcus epidermidis D) Pseudomonas aeruginosa |