Antihistamines are drugs that are used to treat allergic rhinitis (both seasonal and perennial) and other form of allergies that cause hives or urticaria. They can give relief when a patient has nasal congestion, sneezing or hives because of pollen, dust, or animal allergy (allergens). Second generation antihistamines such as loratidine are prescribed for seasonal allergies because they are less sedating than the first generation antihistamines.
Answer:
B. Enzymes decrease the activation energy;
C. Enzymes increase the rate of the reaction;
E. Enzymes provide a site where reactants can be brought together.
Explanation:
The proteins are found around the holes and help move molecules in and out of the cell.
