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Biotechnology and Biomedical Engineering
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Microbiology Virtual Lab I
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Catalase and Coagulase Test
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Catalase and Coagulase Test
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Theory
Procedure
Self Evaluation
Animation
Assignment
Reference
Feedback
1)
Coagulase is an enzyme produced by ________ that converts fibrinogen to fibrin
Staphylococcus aureus
Clostridium difficile
Pathogenic bacteria
Methicillin-resistant Staphylococcus aureus
2)
Catalase enzyme contains four porphyrin ________ (iron) groups that allow the enzyme to react with the hydrogen peroxide
Nicotinamide Adenine dinucleotide
Metalloprotein
Adenosine triphosphate
Heme
3)
A positive result in the catalase test means that the bacterial species is capable of______________
Breaking down hydrogen peroxide
Fermentation
Splitting water into Oâ‚‚ and Hâ‚‚
Breaking down catalase
4)
Catalase is frequently used by cells to rapidly catalyze the decomposition of hydrogen peroxide into less reactive gaseous ________ and water molecules
Nitrogen
Helium
Carbon
Oxygen
5)
The coagulase test is used to differentiate ________ from coagulase-negative staphylococci
Staphylococcus aureus
Clostridium difficile
Pathogenic bacteria
Methicillin-resistant Staphylococcus aureus
6)
The presence of catalase enzyme in the test isolate is detected using ________
Methanol
Hydrogen peroxide
Chlorhexidine
Ethanol
7)
Catalase is a common ________ found in nearly all living organisms which are exposed to oxygen
Enzyme
Cofactor
Carbohydrate
Enzyme inhibitor
8)
Which one among the following is catalase negative?
Enterococcus faecalis
Enterobacter aerogenes
Staphylococcus aureus
Escherichia coli
9)
The reagent used for catalase test is
Hâ‚‚O
Hâ‚‚Sâ‚‚
Hâ‚‚S
Hâ‚‚Oâ‚‚
10)
Cytochrome oxidase is responsible for the transfer of electrons to _________, thus reducing it to_________
Hâ‚‚Oâ‚‚, water
Water, Oxygen
Oxygen, Hâ‚‚Oâ‚‚
Oxygen, water
11)
The catalase test is used to differentiate members of which genus
Mycobacterium
Micrococcus
All of the above
Streptococcus
Cite this Simulator:
vlab.amrita.edu,. (2011). Catalase and Coagulase Test. Retrieved 12 August 2026, from vlab.amrita.edu/?sub=3&brch=73&sim=703&cnt=3
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