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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
Methicillin-resistant Staphylococcus aureus
Clostridium difficile
Pathogenic bacteria
2)
Cytochrome oxidase is responsible for the transfer of electrons to _________, thus reducing it to_________
H₂O₂, water
Water, Oxygen
Oxygen, water
Oxygen, H₂O₂
3)
The reagent used for catalase test is
H₂O
H₂O₂
H₂S
H₂S₂
4)
Which one among the following is catalase negative?
Escherichia coli
Staphylococcus aureus
Enterobacter aerogenes
Enterococcus faecalis
5)
Catalase is a common ________ found in nearly all living organisms which are exposed to oxygen
Cofactor
Enzyme
Carbohydrate
Enzyme inhibitor
6)
The presence of catalase enzyme in the test isolate is detected using ________
Hydrogen peroxide
Chlorhexidine
Methanol
Ethanol
7)
The coagulase test is used to differentiate ________ from coagulase-negative staphylococci
Methicillin-resistant Staphylococcus aureus
Pathogenic bacteria
Clostridium difficile
Staphylococcus aureus
8)
Catalase is frequently used by cells to rapidly catalyze the decomposition of hydrogen peroxide into less reactive gaseous ________ and water molecules
Helium
Carbon
Oxygen
Nitrogen
9)
A positive result in the catalase test means that the bacterial species is capable of______________
Splitting water into O₂ and H₂
Breaking down catalase
Fermentation
Breaking down hydrogen peroxide
10)
Catalase enzyme contains four porphyrin ________ (iron) groups that allow the enzyme to react with the hydrogen peroxide
Nicotinamide Adenine dinucleotide
Adenosine triphosphate
Metalloprotein
Heme
11)
The catalase test is used to differentiate members of which genus
All of the above
Mycobacterium
Streptococcus
Micrococcus
Cite this Simulator:
vlab.amrita.edu,. (2011). Catalase and Coagulase Test. Retrieved 29 March 2024, from vlab.amrita.edu/?sub=3&brch=73&sim=703&cnt=3
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