- Which of the following is a Gram-negative cocci?
- a) Staphylococcus aureus
- b) Streptococcus pyogenes
- c) Neisseria gonorrhoeae ✅
- d) Bacillus anthracis
- What is the shape of Gram-negative cocci?
- a) Rod-shaped
- b) Spherical ✅
- c) Spiral
- d) Filamentous
- Which of the following is an important virulence factor of Neisseria meningitidis?
- a) Capsule ✅
- b) Lipopolysaccharide
- c) Exotoxin A
- d) Coagulase
- What disease is primarily caused by Neisseria gonorrhoeae?
- a) Tuberculosis
- b) Syphilis
- c) Gonorrhea ✅
- d) Typhoid
- Which medium is used to culture Neisseria species?
- a) Blood agar
- b) Chocolate agar ✅
- c) MacConkey agar
- d) Sabouraud dextrose agar
- What is the primary mode of transmission of Neisseria gonorrhoeae?
- a) Airborne
- b) Fecal-oral
- c) Sexual contact ✅
- d) Vector-borne
- Which Gram-negative cocci are known for causing meningitis in young adults?
- a) Moraxella catarrhalis
- b) Neisseria gonorrhoeae
- c) Neisseria meningitidis ✅
- d) Haemophilus influenzae
- Which of the following is NOT a Gram-negative cocci?
- a) Moraxella catarrhalis
- b) Neisseria gonorrhoeae
- c) Streptococcus pneumoniae ✅
- d) Neisseria meningitidis
- Which component of the Neisseria meningitidis cell wall is responsible for inducing septic shock?
- a) Peptidoglycan
- b) Lipopolysaccharide ✅
- c) Lipoteichoic acid
- d) Capsule
- What is the primary reservoir for Neisseria meningitidis?
- a) Soil
- b) Water
- c) Nasopharynx of humans ✅
- d) Animals
- Which antibiotic is commonly used to treat infections caused by Neisseria gonorrhoeae?
- a) Penicillin
- b) Ciprofloxacin
- c) Ceftriaxone ✅
- d) Doxycycline
- Which test is used to differentiate between Neisseria species?
- a) Coagulase test
- b) Oxidase test ✅
- c) Catalase test
- d) Urease test
- What is the characteristic appearance of Neisseria gonorrhoeae under a microscope?
- a) Chains
- b) Clusters
- c) Diplococci (kidney bean-shaped) ✅
- d) Spiral
- Which Gram-negative cocci is a common cause of otitis media in children?
- a) Neisseria gonorrhoeae
- b) Moraxella catarrhalis ✅
- c) Neisseria meningitidis
- d) Streptococcus pneumoniae
- What type of vaccine is available for Neisseria meningitidis?
- a) Live attenuated
- b) Conjugate vaccine ✅
- c) Inactivated whole cell
- d) Toxoid
- Which of the following statements about Moraxella catarrhalis is TRUE?
- a) It is Gram-positive cocci.
- b) It causes sexually transmitted diseases.
- c) It is commonly associated with respiratory infections. ✅
- d) It produces a potent exotoxin.
- Which enzyme, produced by Neisseria gonorrhoeae, can break down IgA antibodies?
- a) Coagulase
- b) Beta-lactamase
- c) IgA protease ✅
- d) Catalase
- Which of the following is a common complication of untreated Neisseria gonorrhoeae infection in women?
- a) Otitis media
- b) Pelvic inflammatory disease (PID) ✅
- c) Meningitis
- d) Tuberculosis
- Which laboratory test confirms the diagnosis of Neisseria meningitidis in cerebrospinal fluid (CSF)?
- a) Gram stain ✅
- b) Catalase test
- c) Urease test
- d) Ziehl-Neelsen stain
- Which of the following diseases is NOT caused by Gram-negative cocci?
- a) Meningitis
- b) Gonorrhea
- c) Scarlet fever ✅
- d) Otitis media
Shopping Cart
