Lecture 5 Flashcards
What unique characteristic does the capsule of Bacillus anthracis possess compared to most other bacterial capsules?
A. It is composed of polysaccharides.
B. It is composed of hyaluronic acid.
C. It is composed of poly-D-glutamic acid.
D. It does not have a capsule.
C. It is composed of poly-D-glutamic acid.
Bacillus cereus is commonly associated with which type of infection?
A. Urinary tract infections
B. Respiratory infections
C. Gastroenteritis
D. Wound infections
C. Gastroenteritis
Which toxin from Bacillus anthracis forms pores in the host cell membranes?
A. Edema factor
B. Protective antigen
C. Lethal factor
D. Both A and C
B. Protective antigen
Clostridium botulinum produces a toxin that affects which part of the nervous system?
A. Central nervous system
B. Peripheral nervous system
C. Both A and B
D. It does not affect the nervous system
B. Peripheral nervous system
What disease is caused by Clostridium tetani?
A. Botulism
B. Tetanus
C. Gas gangrene
D. Antibiotic-associated diarrhea
B. Tetanus
Pseudomonas aeruginosa, a Gram-Negative Bacillus, is known for its resistance to many antibiotics due to:
A. Its thick capsule.
B. Its ability to form biofilms.
C. Production of β-lactamase.
D. All of the above.
D. All of the above.
Which of the following is not a common trait of Mycobacterium tuberculosis?
A. Acid-fast due to mycolic acid in the cell wall.
B. Fast growth rate on standard media.
C. Formation of tubercles in the lungs.
D. Chronic infection that can be latent.
B. Fast growth rate on standard media.
Escherichia coli, a Gram-Negative Bacillus, primarily colonizes which part of the human body?
A. Skin
B. Lungs
C. Intestines
D. Stomach
C. Intestines
Salmonella typhi, which causes typhoid fever, is transmitted primarily through:
A. Contaminated food and water.
B. Direct contact.
C. Aerosols.
D. Blood transfusions.
A. Contaminated food and water.
Legionella pneumophila, responsible for Legionnaires’ disease, primarily infects:
A. The gastrointestinal tract.
B. The central nervous system.
C. The lungs.
D. The skin.
C. The lungs.
Klebsiella pneumoniae is a common cause of:
A. Urinary tract infections.
B. Pneumonia.
C. Both A and B.
D. Skin infections.
C. Both A and B.
Which Gram-Negative Bacillus is known for causing gastric ulcers?
A. Helicobacter pylori
B. Campylobacter jejuni
C. Escherichia coli
D. Salmonella typhi
A. Helicobacter pylori
What is the primary virulence factor of Vibrio cholerae that causes cholera symptoms?
A. Flagella
B. Capsule
C. Cholera toxin
D. Pili
C. Cholera toxin
The primary pathogenicity of Haemophilus influenzae is due to its:
A. Ability to produce a wide variety of toxins.
B. Resistance to physical destruction.
C. Capsule that prevents phagocytosis.
D. Ability to invade cells.
C. Capsule that prevents phagocytosis.
Brucella spp., a Gram-Negative Bacillus, causes:
A. Undulant fever.
B. Tularemia.
C. Plague.
D. Q fever.
A. Undulant fever.
