[روحي تحبه]

السؤال الخامس : صح وخطأ وعليه 5 درجات
1-Tyrosine is first hydroxylated to form 3,4-dihydroxyphenylalanine "dopa

2- nor epinephrine and epinephrine function as neurotransmitters

3- melanine is a pigment that occurs in eye,hair,and skin

4-nor epinephrine and epinephrine as regulators of carbohydrate and lipid bolism

5-serotonin is regulates sleep,temp,and blood pressure

6-histamine is mediates allergic and inflammatory reaction

7-chymotrypsin is the common activator of all the pancreatic zymogens

8-methotrexate and related compounds inhibit the reduction of dihydrofolate to tetrahydrofolate, catalyzed by dihydrofolate reductase

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