Q. Within how many days after birth a stable flora develops?

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Q. Animals that are contaminated with germs are said to be gnotobiotic.

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Q. How many day old embryonated eggs was used by Reyniers to rear first germ-free animals?

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Q. Which among the following was the first germ-free animal to be reared?

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Q. Which of the following vitamins are not required by normal animals?

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Q. Germ-free animals require lower levels of B vitamins.

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Q. Pseudomembranous colitis is caused by the strains of which of the following microorganism?

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Q. Where does the Streptococcus mutans adhere to the body site?

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Q. Which of the following microorganism produces colicins in intestine?

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Q. Which of the following viruses are termed as ‘orphan’ viruses?

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Q. Bacteria can be grown on the dry surface of skin.

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Q. Which of the following causes the disease acne vulgaris?

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Q. Which of the following bacteria are found in the nose?

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Q. The microorganisms stick to which of the following regions of the respiratory tract?

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Q. Alveolar macrophages are phagocytic in nature.

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Q. Saliva generally has a microbial population of _______ bacteria per milliliter.

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Q. Fusobacterium belongs to which type of bacterial group?

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Q. Which enzyme is required for the production of glucan?

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Q. Which of the following microorganism is found in the gingival crevices at puberty?

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Q. Enterococci is found in which part of the intestine?

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