Protein kinase A regulates glycogen metabolism by phosphorylating glycogen synthase and
a. phosphorylase kinase.
b. glycogen phosphatase.
c. glycogen phosphorylase.
d. glucokinase.
Ans: c. glycogen phosphorylase.
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Repressors
A. are involved in negative control. B. are involved in positive control. C. always bind to the promoter. D. bind or do not bind to the operator depending on their shape (conformation). E. are involved in negative control AND bind or do not bind to the operator depending on their shape (conformation).
All of the following teeth are found in adult vertebrates except
A. precanines. B. molars. C. incisors. D. premolars. E. canines.
You have developed a promising anti cancer agent, but it has poor solubility in water. Which of the following changes should improve water solubility?
A.) adding a methyl group B.) increasing the size of the drug C.) adding a hydroxyl group D.) adding a carboxyl group
A structure that appears in a transmission electron micrograph but is not actually present in the specimen is known as a(n)
A) antigen. B) biofilm. C) artifact. D) refraction. E) mordant.