Microbiology of Foods
Examination of the presence / absence of organisms refers to

None of these
incubation of a food suspension in an enrichment medium
incubation of a food suspension in an enrichment medium followed by inoculation on to a non-selective medium.
incubation of a food suspension in an enrichment medium followed by inoculation on to a suitable selective medium.

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Microbiology of Foods
Enumeration of microorganism refers to

either spiral plating, pour plate or spread plate of a food suspension on to a suitable selective agar
either spiral plating, pour plate or spread plate of a food suspension on to a suitable selective agar, or non-selective plate, depending on the test
non-selective plating, depending on the test
None of these

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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
Higher the optimal and maximal temperatures for growth, higher the resistance
Cocci are usually more resistant than rods
Bacteria that clump considerably or form capsules are difficult to kill

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Microbiology of Foods
Which of the following is true about ISO 2002 method for Salmonella detection?

Rappaport Vassiliadis (RV) broth has been replaced by Rappaport Vassiliadis Soya (RVS) broth
Selenite cystine (SC) broth is replaced by Muller Kauffmann tetrathionate novobiocin broth (MKTTn)
All of these
XLD is the first isolation medium rather than BGA

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