Answer to Question 1
ANS: C
Urticaria, also commonly called hives, involves a histamine-mediated response that can be either acute or chronic. A wide range of situations are associated with hives, including a variety of infections, allergies to foods and medications, or underlying systemic disease. Urticaria are pink or red wheals that are very pruritic. Frequently they are associated with anaphylaxis and/or angioedema.
Answer to Question 2
ANS: C
Caf-au-lait spots are caused by increased melanin content and are associated with neurofibromatosis. The lesions vary in appearance and size, with color ranging from tan to brown. There frequently is a history of a variety of developmental and congenital conditions. The lesions are asymptomatic. They range in size from millimeters to over 10 cm and are usually flat macules or patches. Although the color varies, most are coffee colored.
Cross Section of Skin
Anaphylactic Rxtn
viable surface sampling using contact plates
Isomerization reaction proceeds via an enediolate intermediate.
What is the value for Kc for this reaction at 25°C?
Skin Cancers