Wednesday, 29 April 2020

Clinical biochemistry MCQ 001

1. pH reflects:
1. Free hydrogen ions concentration.
2. Concentration of hydroxyl anions.
3. Hydrogen ions concentration to hydroxyl anions concentration ratio.
4. Hydrogen ions partial pressure.
See Answer:

2. Which buffer system predominated inside cells?
1. Bicarbonate
2. Acetate
3. Protein
4. Phosphate
5. Haemoglobin
See Answer:

3. pK of a bicarbonate buffer is:
1.7,3
2.7,4
3.6,1
4.5,9
5.7,8
See Answer:

4. Through which mechanisms do kidneys take part in regulation of acid-base balance?
1. Maintaining of pCO2
2. Bicarbonate ions reabsorption
3. Hydrogen ions excretion
4. Bicarbonate ions regeneration
5. Nonvolatile acids formation
See Answer:

5. Which enzyme in renal tubules catalyzes dissociation of carbonic acid?
1. Lactate Dehydrogenase
2. AST
3. ALT
4. Lipase
5. Carbonic Anhydrase
See Answer:

6. Which anticoagulant is used for determination of parameters of acid base
balance?
1. Oxalate
2. Citrate
3. Heparin Li
4. Heparin-Na
5. EDTA
See Answer:

7. What are the main organs taking part in regulation of acid-base balance?
1. Lungs
2. Kidneys
3. Liver
4. Spleen
5. Small intestine
See Answer:

8. Acidosis is characterized by:
1. Increased blood pH
2. Increasing of blood hydroxyl anions concentration
3. Decreased blood pH
4. Increased hydrogen ions concentration in the blood
5. Decreased lactate blood level
See Answer:

9. Alkalosis is characterized by:
1. Decreased blood pH
2. Decreased blood hydroxyl anions concentration
3. Increased lactate blood level
4. Increased blood pH
5. Decreased hydrogen ions concentration in blood
See Answer:

10.Respiratory acidosis may develop due to:
1. Prolonged starvation
2. Pyelonephritis
3. Respiratory distress syndrome
4. Hepatitis
5. Hyperventilation
See Answer:


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