Q. Which of the following test(s) may establish retrospective diagnosis of streptococcal infection?

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Q. The bacterial sore throat is caused by

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Q. Crystal violet blood agar is a selective medium for

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Q. Which of the following types of Clostridium perfringens produces alpha toxin most abundantly?

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Q. Which of the following is predominantly proteolytic?

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Q. Which of the following properties are the characteristics of tetanospasmin?

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Q. Types of exotoxin, most commonly associated with botulism in man, is/are?

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Q. Nagler's reaction is useful for the identification of

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Q. The most toxic exotoxin is

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Q. Which of the following species of Clostridium is predominantly sacchrolytic?

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Q. Stormy clot reaction is useful in identification of

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Q. Food poisoning strains of Clostridium perfringens belong to

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Q. Reddening of meat in cooked meat broth is produced by

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Q. Clostridium botulinum food poisoning is due to

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Q. Drumstick appearance is characteristic of

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Q. Blackening of meat in cooked meat broth is through

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Q. Typical drumstick appearance of bacilli is generally seen in

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Q. Which of the following(s) is/are obligate anaeorbes?

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Q. Lactobacilli grow best under

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Q. Which of the following genera is included in the family Bacteroi-daceae?

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