Detection Of Catalase Flashcards
1
Q
For microorganisms that are aerobic what does it use as its final electron ?
A
Oxygen
2
Q
For organisms that do not use oxygen as the final electron, how do they obtain energy ?
A
Fermentation or anaerobic respiration
3
Q
What derivatives of oxygen can poison anaerobic microorganisms ?
A
-H2O2 (hydrogen peroxide)
-O2- (oxygen radical )
4
Q
Most aerobic or facultative anaerobes can secrete what type of enzyme ?
A
Catalase
5
Q
Red blood cells also secrete what in the presence of hydrogen peroxide?
A
Catalase
6
Q
Does streptococci secrete catalase in the presence of hydrogen peroxide?
Y/N?
A
No
7
Q
What organisms are used for detection of catalase?
A
-staphylococcus aureus
-streptococcus equisimilis
8
Q
How many drops of hydrogen peroxide is added for detection of catalase ?
A
1-2 drops
