MLT Clinical Chemistry Final Exam review with correct Answers
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Course
Clinical Chemistry
Institution
Clinical Chemistry
Enzymes that can bind only one substrate and catalyze one reaction exhibit which type of binding
specificity? - Absolute binding
The rate of an enzymatic reaction will ___________________ for every 10 degrees C temperature
increase until the enzyme denatures. - Double
All of the following con...
MLT Clinical Chemistry Final Exam review with correc t Answers Enzymes that can bind only one substrate and catalyze one reaction exhibit which type of binding specificity? - ✓✓Absolute binding The rate of an enzymatic reaction will ___________________ for every 10 degrees C temperature increase until the enzyme denatures. - ✓✓Double All of the following conditions may result in a rise in CKBB levels except. a. Child birth b Spinal chord injury c. Myocardial infarction d. Brain tumor - ✓✓c. Myocardial infarction Which two enzymes will show significant elevations with viral hepatitis? - ✓✓AST & ALT GGT is an enzyme that can be used to help monitor the treatment of which patient population? - ✓✓recovering alcoholics Digestive enzymes circulate in inactive forms called __________________. - ✓✓Zymogens A patient comes to the ER with abdominal pain, the physician ordered an amylase, lipase, and lipid panel. The triglyceride result is significantly elevated, how might this effect the amylase and lipid levels? (thrown out) - ✓✓Unchanged lipase, decreased amylase Which of the following is a function of glucose -6-phosphate dehydrogenase (G6PD) a. prevents RBC lysis b. inhibits CK c. stimulates insulin secretion d. catalyzes the conversion of glutamate - ✓✓a. prevents RBC lysis Which type of enzyme kinetics assay is ideal fro the clinical laboratory setting where the amount of enzyme produced by the patient is unknown? - ✓✓zero order What condition is characterized by elevated serum amylase levels and decrease urinary amylase levels due to amylase binding to immunoglobulins? - ✓✓macroamylasemia In the presence of a competitive inhibitor, what would need to be increased to reach VMax? - ✓✓substrate A grossly hemolyzed sample is received in the lab, what effect would this have on the total CK determination? - ✓✓Falsely increased A patient with osteitis deformans would be expected to have elevations in which enzyme? - ✓✓ALP Which enzyme may be useful in diagnosing metastatic carcinomas of the prostate? - ✓✓ACP Which enzyme is most specific for the diagnosis of acute pancreatitis? - ✓✓Lipase Elevation in this enzyme can be useful in diagnosing patients with hemolytic anemia? - ✓✓LD Which of the following is not a reducing substance? a. lactose b. glucose c. sucrose d. fructose - ✓✓c. sucrose What process converts non -sugar molecules into glucose to be used for energy? - ✓✓Gluconeogenesis All of the following are symptoms of hyperglycemia except. a. excessive thirst b. dry skin c. drowsiness d. decreased urination - ✓✓decreased urination Which hormone is referred to as a hypoglycemic and increases glycolysis and glycogenesis? - ✓✓insulin When a patient with diabetes mellitus begins to use lipids for energy, which of the following analytes will be elevated? a. HDL b. lactose c. ketones d. growth factor - ✓✓ketones Carbohydrate are composed of carbon, hydrogen, and oxygen, what is the ratio of hydrogen to carbon? - ✓✓2:1 What is the primary site for glycogenesis? - ✓✓liver The production of autoantibodies against the insulin producing cells in the pancreas is seen with what form of diabetes? a. Type 1 b. Type 2 - ✓✓a. Type 1 At what age does the ADA recommend beginning screening for diabetes every three years? - ✓✓45 years old
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