Microbiology of Foods
Suspected colonies of Staphylococcus aureus when grown on Baird-Parker medium shall show

none of these
coagulase activity
catalase activity
protease activity

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Microbiology of Foods
Which of the following is not true for the thermal resistance of the bacterial cells?

Cells low in lipid content are harder to kill than other cells
Bacteria that clump considerably or form capsules are difficult to kill
Cocci are usually more resistant than rods
Higher the optimal and maximal temperatures for growth, higher the resistance

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Microbiology of Foods
Plate count of bacteria in foods generally use the plating medium consisting of

peptone, yeast extract, glucose, sodium chloride and distilled water
peptone, yeast extract, glucose, sodium chloride, agar and distilled water
yeast extract, glucose, sodium chloride, agar and distilled water
peptone, glucose, sodium chloride, agar and distilled water

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