Question

State true or false: [10×1=10]

1) Only large amounts of an allergen can cause a reaction.

2) Airborne pollens have little effect on the skin.

3) Sensitivity to allergens changes with time.

4) Allergen immunotherapy exposes people to large amounts of allergen.

5) Aquagenic urticaria is a rash caused by contact with water.

6) Metabolic reactions produce waste.

7) The yellow colour of urine is due to urea.

8) Cerebellum is the largest part of the brain.

9) The reflex action is a voluntary action.

10) Mixed nerves carry messages to and from the brain.​

Answer 1

Explanation:

Most severe allergic reactions occur within seconds or minutes after exposure to the allergen. Some reactions can occur after several hours, particularly if the allergen causes a reaction after it has been eaten. In very rare cases, reactions develop after 24 hours

Answer 2

Answer:

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