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If a disease of the blood vessels caused the endothelial cells of the vessel to die, what effect would that have on the cellular activities associated with vasodilation?
A. Nitric oxide would no longer be produced
B. Smooth muscle cells could not be made to relax
C. It would be more difficult to increase blood flow and reduce blood pressure
D. All of the above -
A ketogenic amino acid is one which degrades to
A. keto-sugars
B. either acetyl CoA or acetoacetyl CoA
C. pyruvate or citric acid cycle intermediates
D. multiple intermediates including pyruvate or citric acid cycle intermediates and acetyl CoA or acetoacetyl CoA -
The antibiotic penicillin is a small molecule that does not induce antibody formation. However, penicillin binds to serum proteins and forms a complex that in some people induces antibody formation resulting in an allergic reaction. Penicillin is therefore
A. an antigen
B. a hapten
C. an immunogen
D. both an antigen and a hapten