Suspected colonies of Staphylococcus aureus when grown on Baird-Parker medium shall show none of these protease activity coagulase activity catalase activity TRUE ANSWER : ? YOUR ANSWER : ?
Water activity can act as a processing factor an intrinsic factor determining the likelihood of microbial proliferation an extrinsic factor All of these TRUE ANSWER : ? YOUR ANSWER : ?
Plate count of bacteria in foods generally use the plating medium consisting of peptone, glucose, sodium chloride, agar and distilled water yeast extract, glucose, sodium chloride, agar and distilled water peptone, yeast extract, glucose, sodium chloride and distilled water peptone, yeast extract, glucose, sodium chloride, agar and distilled water TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is true about ISO 2002 method for Salmonella detection? XLD is the first isolation medium rather than BGA Selenite cystine (SC) broth is replaced by Muller Kauffmann tetrathionate novobiocin broth (MKTTn) All of these Rappaport Vassiliadis (RV) broth has been replaced by Rappaport Vassiliadis Soya (RVS) broth TRUE ANSWER : ? YOUR ANSWER : ?
Yeast and mould count determination requires- MacConkey agar acidified potato glucose agar nutrient agar violet Red Bile agar TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following acid will have higher bacteriostatic effect at a given pH? Tartaric acid Acetic acid Citric acid Maleic acid TRUE ANSWER : ? YOUR ANSWER : ?
The microbiological examination of coliform bacteria in foods preferably use eosine Methylene blue agar violet Red Bile agar MacConkey broth all of these TRUE ANSWER : ? YOUR ANSWER : ?
What are the intrinsic factors for the microbial growth? pH All of these Oxidation-Reduction Potential Moisture TRUE ANSWER : ? YOUR ANSWER : ?
A psychrophilic halophile would be a microbe that prefers cold temperatures and increased amounts of salt warm temperatures and increased amounts of pressure cold temperatures and the absence of oxygen warm temperatures and increased amounts of acid TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not true for the thermal resistance of the bacterial cells? Higher the optimal and maximal temperatures for growth, higher the resistance Cells low in lipid content are harder to kill than other cells Cocci are usually more resistant than rods Bacteria that clump considerably or form capsules are difficult to kill TRUE ANSWER : ? YOUR ANSWER : ?