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Unformatted text preview: 99:110 Exam 4 Form A April 27, 2007 1. Insulin: a. is made by pancreatic β islet cells b. binds only to cells with the appropriate receptor c. suppresses glycogen breakdown d. stimulates fatty acid synthesis e. all of the above 2. Characteristics shared by all hormones include: a. hormones bind to a cell surface receptor with seven transmembrane domains b. hormones act as 2nd messengers c. hormones trigger a cascade mechanism d. hormones carry information to co- ordinate metabolism or gene expression e. none of the above 3. Which of the following are true statements? a. adenylyl cyclase converts ATP to cAMP, which can then act as a 2nd messenger b. epinephrine and norepinephrine play a role in muscle gluconeogenesis c. insulin is activated when the body is “starving” d. only glucose metabolism is disordered in diabetes e. none of the above are true 4. Compartmentation of metabolism in the cell separates a. The citric acid cycle and beta oxidation b. Glycolysis and gluconeogenesis c. Amino acid synthesis and breakdown d. Fatty acid synthesis and ketogenesis e. Gluconeogenesis and the pentose phosphate pathway 5. During fasting the liver a. Helps the muscles by sending them nitrogen b. Helps the brain by sending it glucose and ketone bodies c. Depends upon the kidney for lactate and alanine d. Uses urea from the kidney for carbon backbones to make glucose e. Responds to insulin by increasing glucose uptake 6. In people with the trait for type II diabetes, the earliest change in metabolism is a. Loss of insulin production b. Elevated blood glucose c. Elevated blood pressure d. Damage to the kidney e. Cataract formation 7. Efficient replication of DNA by DNA polymerase requires: a. synthesizing new DNA in the 3’ => 5’ direction b. the presence of leading & lagging strands c. synthesizing new DNA one strand at a time d. using primers to initiate DNA synthesis e. both B & D f. all of the above 8. Proteins involved in DNA replication include: a. primase b. helicase c. sliding clamp d. single stranded binding protein e. all of the above f. none of the above...
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This test prep was uploaded on 04/12/2008 for the course BIOCHEM 099:100 taught by Professor Fulton during the Spring '07 term at University of Iowa.
- Spring '07