Raised, swollen, well-defined area on the skin that is the result of an insect bite or sting is called: Select one: a. a wheal. b. purpura. c. urticaria. d. a pustule.

Wheal/Urticaria the

Explanation:

Wheal:*A raised,well defined swelling on the skin,often itchy,caused by an insect bite or blow from a whip*.

Wheals comes as a result of *allergic reaction*. When an insect stings on a skin,the body releases a protein called histamine.Upon release of this histamine,the tiny vessels(capillaries) leak the fluid..The fluid accumulates in the skin causing Rash/swelling. They may be rounded of flat-topped with a reddish hue.

A wheal can last for several days without fading away.

Another name for wheal is *Urticaria*

TREATMENT:

A wheal can be treated using *Antihistamines*,such as Certirizine/Fexofenadine which *helps to block the effects of histamine,reducing rash/swelling on that spot of the the allergic bite or whip,and stopping itching*.

his research revealed two genetically different groups of prokaryotes, which justified splitting kingdom monera into two kingdoms. the genetic and cellular differences were so great, that these two kingdoms were eventually placed into different domains in the current three-domain system.

the oceanic zone is typically defined as the area of the ocean lying beyond the continental shelf, but operationally is often referred to as beginning where the water depths drop to below 100 meters (328 feet), seaward from the coast to the open ocean.

explanation: