The normal habitat of Staphylococcus aureus may be: a)Urinary tract b) Stomach c

Question

The normal habitat of Staphylococcus aureus may be: a)Urinary tract b) Stomach c) Healthy tissues d) Nose, throat, and skin e) Scalp 7) Clostridium perfringens may be found as a part of the normal flora in: ) Mouth Lungs Urinary tract Wounds 9 A disease constantly present in a locality is said to be a) Endemic b) Epidemic c) Pandemic d) Sporadic e Reservoir 0) Foreign substances that induce a specific immune response after gaining entrance to the body are termed: Antigens Antibodies c) Cytolysins Complement e)None of the above Essential properties of an antigen are: a must be foreign to the host b) ust be degradable by the host c) must be a large molecule and possess at least two different determinant groups ) must possess a three-dimensional or tertiary structure All of the above

Explanation / Answer

Que 7)

Ans:

The normal habitat of Staphylococcus aureus may be: d) Nose, throat and skin.

Explanation:

- Staphylococcus aureus is a type of bacteria commonly found on the skin and hair.

- It is also found in the nose and throats of people and animal.

- Staphylococcus aureus known to be a major cause of food poisoning.

- Hence, correct option is: d.

Que 8)

Ans:

Clostridium perfringens may be found as a part of the normal flora in: b) Intestines.

Explanation:

- Clostridium perfringes produces spores in the human gut.

- It is found as a part of the normal flora of the intestinal tracts of both animals and humans.

- Clostridium perfringes produces many toxins and enzymes that lyse blood cells and destroy tissues.

- Hence, correct option is: b).

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