Clinical Microbiology Hardest Exam! Quiz

48 Questions | By Ebmpruett | Updated: Mar 22, 2022 | Attempts: 230

Questions

Settings

Clinical Microbiology Hardest Exam! Quiz - Quiz

Are you ready for this Clinical Microbiology most challenging exam quiz? There are many bacteria, parasites, and viruses that attack the body in a person’s life. A microbiologist is responsible for taking samples from a patient and examining them to know the root cause of illness and come up with a diagnosis as to what one is ailing from and how to treat it. This quiz will test your understanding of some microbiology facts and act as a refresher to know what to read on.

Questions and Answers

1.

Staphylococcus is...
- A.
  
  Facultatively aerobic
- B.
  
  Facultatively anaerobic
- C.
  
  Obligate aerobe
- D.
  
  Obligate anaerobe
2.

Name one Invasin used by Vibrio Cholerae and Shigella dysenteriae
- A.
  
  Neuraminidase
- B.
  
  Hyaluronidase
- C.
  
  Collagenase
- D.
  
  Option 4
3.

All of the following are Invasins used by Clostridium perfringens EXCEPT
- A.
  
  Collagenase that breaks down the framework of muscles, which facilitates gas gangrene
- B.
  
  Streptokinase that convrt plasminogen to plasmin
- C.
  
  Phospholipases that hydrolyze phospholipids in cell membranes by removal of polar head groups
- D.
  
  Hyaluronidase that attacks the interstitial cement of connective tissue by depolymerizing hyaluronic acid
4.

Where is Staphylococcus epidermidis found?
- A.
  
  Skin
- B.
  
  Conjunctiva
- C.
  
  Ear
- D.
  
  Nasopharynx
- E.
  
  Oropharynx
- F.
  
  Small intestine
- G.
  
  Colon
- H.
  
  Distal urethra
- I.
  
  Vagina
5.

Where is Bacteroides found?
- A.
  
  Skin
- B.
  
  Conjunctiva
- C.
  
  Ear
- D.
  
  Nasopharynx
- E.
  
  Oropharynx
- F.
  
  Small intestine
- G.
  
  Colon
- H.
  
  Distal Urethra
- I.
  
  Vagina
6.

Where is Staph aureus found?
- A.
  
  Skin
- B.
  
  Conjunctiva
- C.
  
  Outer ear
- D.
  
  Nasopharynx
- E.
  
  Oropharynx
- F.
  
  Small intestine
- G.
  
  Large intestine
- H.
  
  Distal urethra
- I.
  
  Vagina
7.

Where is Lactobacillus usually found?
- A.
  
  Skin
- B.
  
  Conjunctiva
- C.
  
  Ear
- D.
  
  Nasopharynx
- E.
  
  Oropharynx
- F.
  
  Small intestine
- G.
  
  Colon
- H.
  
  Distal urethra
- I.
  
  Vagina
8.

Where does Pseudomonas normally cause infection?
- A.
  
  Skin
- B.
  
  Conjunctiva
- C.
  
  Outer ear
- D.
  
  Nasopharynx
- E.
  
  Oropharynx
- F.
  
  Small intestine
- G.
  
  Colon
- H.
  
  Distal urethra
- I.
  
  Vagina
9.

Where does Streptococcus pneumonia normally cause infection?
- A.
  
  Skin
- B.
  
  Conjunctiva
- C.
  
  Outer ear
- D.
  
  Nasopharynx
- E.
  
  Oropharynx
- F.
  
  Small intestine
- G.
  
  Large intestine
- H.
  
  Distal urethra
- I.
  
  Vagina
10.

Which requires anaerobic coverage in the colon?
- A.
  
  Bacteroides
- B.
  
  Clostridium
- C.
  
  Fusobacterium
- D.
  
  Peptostreptococcus
- E.
  
  Corynebacterium
- F.
  
  Pseudomonas
- G.
  
  Enterobacteriacae
11.

Which requires anaerobic coverage in the small intestine?
- A.
  
  Lactobacillus
- B.
  
  Fusobacterium
- C.
  
  Peptostreptococcus
- D.
  
  Clostridium
- E.
  
  E. Coli
- F.
  
  Bacteroides
- G.
  
  Enterococcus
12.

Which requires Anaerobic coverage in the oropharynx?
- A.
  
  Eikenella corrodens
- B.
  
  Peptostreptococcus
- C.
  
  Moraxella Catarrhalis
- D.
  
  Fusobacterium
- E.
  
  Bacteroides
- F.
  
  Actinomyces
- G.
  
  Viridans Strep
13.

What is a common cause of infection in the nasopharynx?
- A.
  
  Staph aureus
- B.
  
  Strep pneumonia
- C.
  
  Staph epidermidis
- D.
  
  Haemophilus
- E.
  
  Niesseria
14.

What commonly cause infection in the small intestine?
- A.
  
  Bacteroides
- B.
  
  Enterococcus
- C.
  
  Fusobacterium
- D.
  
  Peptostreptococcus
- E.
  
  Candidia
- F.
  
  Clostridium
- G.
  
  Enterobacteriacae
15.

What are the common causes of infection in the oropharynx?
- A.
  
  Moraxella catarrhalis
- B.
  
  Viridans strep
- C.
  
  Actinomyces
- D.
  
  Neisseria
- E.
  
  Staph aureus
- F.
  
  Strep Pyogenes
- G.
  
  Strep pneumoniae
- H.
  
  Haemophilus influenz
- I.
  
  Bacteroides
16.

Which commonly cause infection in the colon?
- A.
  
  Bacterioides
- B.
  
  Clostridium
- C.
  
  Enterobacteriaceae
- D.
  
  Enterococcus
- E.
  
  Fusobacterium
- F.
  
  Peptostreptococcus
- G.
  
  Lactobacillus
- H.
  
  Corynebacterium
- I.
  
  Mycobacterium
- J.
  
  Candidia
17.

What commonly causes infection in the distal urethra?
- A.
  
  Gardnerella vaginalis
- B.
  
  Enterobacteriaceae
- C.
  
  Enterococcus
- D.
  
  Mycoplasma
- E.
  
  Ureaplasma
- F.
  
  Candidia
- G.
  
  Bacterioides
- H.
  
  Neisseria
18.

Where is Corynebacterium found?
- A.
  
  Skin
- B.
  
  Conjunctiva
- C.
  
  Ear
- D.
  
  Nasopharynx
- E.
  
  Oropharynx
- F.
  
  Small intestine
- G.
  
  Colon
- H.
  
  Distal Urethra
- I.
  
  Vagina
19.

Which of the following cause premature dissociation of peptidyl-tRNA from the ribosome?
- A.
  
  Glycylcyclines
- B.
  
  Macrolides
- C.
  
  Mupirocin
- D.
  
  Rifampin
- E.
  
  Chloramphenicol
- F.
  
  Clindamycin
- G.
  
  Streptogramins
- H.
  
  Linezolid
- I.
  
  Ketolides
- J.
  
  Aminoglycosides
- K.
  
  Tetracyclines
20.

How does Mupirocin function?
- A.
  
  Binds to 23s rRNA of 50s Subunit, inhibiting the formation of ribosome mRNA complex
- B.
  
  Blocks ribosomal exit tunnel, terminating peptide synthesis
- C.
  
  Inhibits isoleucine synthetase, preventing it from binding to tRNA to be incorporated into the peptie chairn
- D.
  
  Irreversibly binds 50s subunit, inhibiting peptidyl transferase
- E.
  
  Binds to 30s subunit and inhibits binding of aminoacyl-tRNA to the A site, interrupting elongation of protein synthesis
21.

How does Linezolid function?
- A.
  
  Binds to 30s subunit and inhibits binding of aminoacyl-tRNA to the A site
- B.
  
  Binds to 30s subunit and inhibits binding of aminoacyl-tRNA to the A site, interrupting elongation of protein synthesis
- C.
  
  Reversibly binds the 23s rRNA of the 50s subunit, inhibiting the formation of the ribosome-mRNA complex
- D.
  
  Reversibly binds the 50s subunit inhibiting translocatio of tRNA from A site to P site
22.

How do Macrolides function?
- A.
  
  Binds to 30s subunit and inhibits binding of aminoacyl-tRNA to the A site, interrupting elongation of protein synthesis
- B.
  
  Reversibly bind the 50s subunit, preventing peptidyl transferase activity, inhibiting the translocation of tRNA from A site to P site
- C.
  
  Prevents peptide bond formation during elongation
- D.
  
  Binds to RNA Polymerase inhibiting the initiation of trasncription
23.

How do Clindamycin and other Lincosamides function?
- A.
  
  Binds to 30s subunit and inhibits binding of aminoacyl-tRNA to the A site, interrupting elongation of protein synthesis
- B.
  
  Irreversibly binds the 50s subunit preventing peptide bond formation during elongation
- C.
  
  Reversibly bind the 50s subunit, inhibiting translocation of tRNA from A site to P site, causing premature dissociation of the peptidyl-tRNA from the ribosome
- D.
  
  Energy dependent, sometimes irreversible finding to the 30s subunit, disrupting the formation of ribosome-mRNA complex. causing errors in translation, and blocks translocation
24.

How do Streptogramins work?
- A.
  
  Irreversibly bind to the 50s subunit . Group A prevents peptide bond formation during elongation. Group B causes premature dissociation of peptidyl-tRNA from the ribosome
- B.
  
  Binds to 30s subunit and inhibits binding of aminoacyl-tRNA to the A site, interrupting elongation of protein synthesis
- C.
  
  Binds to 30s, sometimes irreversibly, disrupting the formation of ribosome-mRNA complex, causes errors in translation, and blocks translocation
- D.
  
  Reversibly binds to the 23s rRNA of the 50s subunit, inhibiting the formation of the ribosome-mRNA complex
25.

How do Ketolides function?
- A.
  
  Blocks the ribosomal exit tunnel, thus terminating peptide synthesis
- B.
  
  Binds to 30s subunit and inhibits binding of aminoacyl-tRNA to the A site, interrupting elongation of protein synthesis
- C.
  
  Reversibly binds to the 23s rRNA of the 50s subunit, inhibiting the formation of the ribosome-mRNA complex
- D.
  
  Binds to the 50s subunit, inhibiting translocation of tRNA from A site to P site, causing premature dissociation of peptidyl-tRNA from the ribosome