Quiz On Gram Stain

10 Questions | By Hepado11398 | Updated: Oct 12, 2022 | Attempts: 2169

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Gram stain is a test that looks for bacteria in wounds on the skin and other areas where an infection is thought to have occurred. This quiz is aimed at testing your knowledge about the topic. The quiz will be a great help if you want to gain practical and functional knowledge about it. The quiz contains various questions ranging from easy medium to hard level that would help in clarifying your concepts. All the best!

Questions and Answers

1.

Gram stain differentiates bacteria on the basis of _____________ and _____________ concentration in the cell wall.
- A.
  
  Protein ; lipid
- B.
  
  Lipid ; peptidoglycan
- C.
  
  Phospholipid ; peptidoglycan
- D.
  
  Peptidoglycan ; lipoprotein
2.

Old Gram-negative bacteria may apperar this color after Gram staining?
- A.
  
  Red
- B.
  
  Purple
- C.
  
  Clear
- D.
  
  Green
3.

What would be the color of Gram-positive bacteria if instead of 95% ethyl alcohol acid-alcohol was used as a decolorizer in Gram staining procedure?
- A.
  
  Purple
- B.
  
  Clear
- C.
  
  Red
- D.
  
  Some purple and some red
4.

How many reagents are used in Gram stain?
- A.
  
  3
- B.
  
  2
- C.
  
  1
- D.
  
  4
5.

Which of the following bacterim is Gram-positive, spherail shape (coccus), and grows in bunches?
- A.
  
  Bacillus cereus
- B.
  
  Staphylococcus epidermidis
- C.
  
  Micrococcus luteus
- D.
  
  Escherichia coli
6.

Which of the following bacteria is Gram-negative, cylendrical shape (bacillus), and grows in pairs?
- A.
  
  Micrococcus luteus
- B.
  
  Escherichia coli
- C.
  
  Staphylococcus epidermidis
- D.
  
  Bacillus cereus
7.

The cell wall of ______ contains lipopolysaccharide
- A.
  
  Gram positive bacteria
- B.
  
  Fungi
- C.
  
  Algae
- D.
  
  Gram negative bacteria
8.

Iodine is used as a mordant?
- A.
  
  Mordant
- B.
  
  Catalyst
- C.
  
  Indicator
- D.
  
  Solubalizer
9.

Gram staining method developed?
- A.
  
  Christian Gram
- B.
  
  Michael Gram
- C.
  
  John Stuart Gram
- D.
  
  Thomas Gram
10.

In which year Gram staining method was developed?
- A.
  
  1883
- B.
  
  1878
- C.
  
  1866
- D.
  
  1857