Sunday, May 17, 2015

Answers to Electrolyte and Instrumentation Review Questions

1. In electrophoresis, the basis of separation are the following, EXCEPT:

a. Charges of ions
b. Electrophoretic media
c. Net charge of particles
d. Concentration of ions
e. NIL

2. The movement of ions in electrophoresis is from:
a. Negative to positive
b. Positive to negative
c. Negative to negative
d. Positive to positive
e. NIL

3. The principle of chromatography is:
a. The movement of charged particles in an electric field
b. The involvement the solute and solvent
c. The measurement of emitted light
d. The excitation of ions in solution
e. NIL

4. Chromatography is affected by the following factors, EXCEPT:
a. Density of particles in solution
b. Size of particle
c. Affinity of particles to chromatographic media
d. pH
e. NIL

5. The following precautions are observed in Gravimetry, EXCEPT:
a. The balance should be adjusted to zero
b. The substance to be measured should be hydrated
c. The substance should be uncontaminated
d. The vessels used should be clean and dry
e. NIL

6. The specific substance that causes lipemia is:
a. Lipoprotein lipase
b. Chylomicrons
c. Triglycerides
d. Cholesterol
e. NIL

7. The most predominant carbohydrate is:
a. Fatty acid
b. Glucose
c. Amino acid
d. Triglyceride
e. NIL

8. Chromatography can be utilized in the separation of the following, EXCEPT:
a. Proteins
b. Sugars
c. Drugs
d. Glucose
e. NIL

9. The following are effects of long standing of serum samples not separated from the cells at room temperature in glucose determination:
1. There will be falsely decreased results.
2. The rate of loss of glucose due to long standing at RT is 7 mg/dL/hr. if the serum is not separated from the cells.
3. The rate of loss of glucose may be higher due to possible bacterial contamination.
4. There will be falsely elevated values.
5. There will be no effect on glucose values.

a. 1
b. 1 and 2
c. 1, 2 and 3
d. 1, 3 and 5
e. NIL

10. Convert 6.5 mmol/L of glucose to traditional units.
a. 122.78
b. 123.56
c. 119.07
d. 120.72
e. NIL

11. Which of the following is the reference method for glucose?
a. Somogyi-Nelson
b. Hexokinase
c. Orthotoluidine
d. Nelson Somogyi
e. NIL

12. Which of the following is a characteristic of Type 1 DM
a. Family history of DM
b. Usually occurs at at age 40 and above
c. Ketosis not prominent
d. Thin persons
e. NIL  

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