Lab assignment 3: Pet bacterium identification
Name: _____Shingirirai Mutangiri _______________________________ Student number:
________007936726_____________
Exercise 21: Bacterial identification
1) Fill in the information below with the results obtained for your pet bacterium. (4 marks)
Pet bacterium number: _____B11 ____ Gram reaction: ____positive_______ Cell shape:
______rod shaped ________
Motility: __yes_________ ( note that you did two tests for motility. But this is a yes or no
question. You must decide, Is your bacterium motile?)
Does it produce endospores? ____no___________ (yes or no)
Metabolic test Result (+, -, or ND)
Starch hydrolysis -
Gelatin hydrolysis +
Glucose fermentation Gas:
Maltose fermentation -
Lactose fermentation +
Urease production -
Catalase production -
+ is a positive result, - is a negative result, ND = not determined. You may score one test as ND for free,
as long as it doesn’t affect the outcome of the identification (ie. with no penalty.) (You cannot score the
Gram reaction or cell shape as ND because you definitely need those to identify your unknown.)
2) Give the full species name of your pet bacterium (in correct scientific format). (4 marks)
Enterocaccae .faecalis (E.faecalis)
Total = /8