Success Chemistry Carbohydrates
Terms in this set (34)
What does hydrolysis of sucrose yield?
Fructose and glucose
In what form is glucose stored in muscle and liver?
Which of the following is a polysaccharide?
Which of the following defines the term "glycolosis"?
conversion of glucose into lactate or pyruvate
What is the glucose concentration in fasting whole blood?
Less than the concentration in plasma or serum
Of the following blood glucose levels, which would you expect to result in glucose in the urine?
Which test may be performed to assess the average plasma glucose level that an individual maintained during a previous 2 to 3 month period?
The physician determined that the patient needed an oral glucose toleranct test (OGTT) to assist in diagnosis. The patient had blood drawn for the OGTT, and the following serum blucose results wer obtained. These results are indicative of what state? Fasting serum glucose 124 mg/dL, 2-hour postload serum glucose 227 mg/dL?
A 30 year old pregnant woman has gestational diabetes mellitus screenting test performed at 26 weeks of gestation. Her physician chooses to order a 50 g oral glucose load. Her serum glucose level is 150 mg/dL at 1 hour. What should occur next?
This is suspicious of diabetes mellitus; an oral glucose tolerance test should be performed.
A sample of blood is collected for glucose in a sodium fluoride tube before the patient has had breakfast. The physician calls 2 hours later and requests that determination of blood urea nitrogen (BUN) be performed on the same sample rather than obtaining another specimen. The automated analyzer in your laboratory utilizes the urease method to quantify BUN. What should you tell the physician?
Cannot perform the procedure
Which of the following does not properly describe type 1 diabetes mellitus?
Occurs more frequently in adults
Which of the following is not associated with insulin?
C - Peptide is active form
Which of the following statements may be associated with the activity of insulin?
Stimulates glycogenesis in the liver
Which of the following is not characteristic of severe hyperglycemia?
Which of the following statements applies to the prefered use of plasma or serum, rather than whold blood, for glucose determination.
All of the above: Glucose is more stable in separated plasma or serum, Specificity for glucose is higher with most methods when plasma or serum is used, It is convenient to use serum or plasma with automated instruments because whole blood requires mixing immediately before sampling
Which of the following analytes would not commonly be measured when monitoring complications of diabetes mellitus?
Ingestion of what of the following drugs may cause hypoglycemia?
All of the above: Ethanol, Propranolol and Salicylate
Which of the following is not associated with hypoglycemia?
Symptoms occur with plasma glucose level of 60-70 mg/dL
Which glucose method can employ a polargraphic oxygen electrode?
Which glucose method catalyzes the phosphorylation of glucose by adenosine triphosphate, forming glucose-6-phosphate and adenosine diphosphate with the absorbance of the NADPH product read a t 340 nm?
Which of the following is not a reagent required in an enzymatic serum glucose method?
Which of the following glucose methods should not be used during the administration of an oral xylose absortion test?
Which glucose method is considered to be the reference method?
An individulal has a plasma glucose level of 110 mg/dL. What would be the approximate glucose concentration in this patients cerebrospinal fluid?
What is the reference interval for fasting serum glucose in an adult expressed in SI units (international system of units)?
4.1 - 5.5 mmol/L
At what level should a 52 year old male diagnosed with type 2 diabetes mellitus maintain his hemoglobin A1C?
Which of the following hormones does not promote an increase in blood glucose levels?
What effect if any would be expected when the secretion of epinephrine is stimulated by physical or emotional stress?
Increased blood glucose level
What would an individual with Cushing syndrome tend to exhibit?
As part of a routine physical, a fasting plasma glucose is performed on a 45 year old male and the test result is 105 mg/dL. How should this individula be classified?
Impaired fasting glucose
A cerebrospinal fluid specimen is sent ot the lab at 9:00 pm for glucose analysis. The specimen is cloudy and appears to containg red blood cells. Which of the following statements is true?
Specimen should be centrifuged and glucose assayed immediately.
A patient has a urine uric acid level of 1575 mg/day. What effect will this have on the measured urine glucose level when the glucose oxidase/peroxidase method is employed?
Urine glucose level will be falsely low
Laboratory tests are performed on a postmenopausal, 57 year old female as part of an annual physical examination. The patient's casual plasma glucose is 220 mg/dL, and the glycated hemoglobin (HBA1c)is 11%. Based on this information, how should the patient be classified?
Type 2 diabetes mellitus
Which of the following is characterized by a deficiency of glucose-6-phosphatase resulting in hepatomegaly, lactic acidosis, and severe fasting hypoglycemia?
Type I - von Gierke disease
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