1.- The pH of the body fluids is stabilized by buffer systems. Which of the following compounds is the most effective buffer system at physiological pH?

• a) Bicarbonate buffer

• b) Phosphate buffer

• c) Protein buffer

• d) Haemoglobin buffer

2.In correcting alkalosis, bicarbonate buffering action is not efficient because:

• a) pH value is low.

• b) It is a weak buffer.

• c) Base/Acid ratio is 20/1

• d) Bicarbonate quantity is not enough.

3.The greatest buffering capacity at physiological pH would be provided by a protein rich in which of the following amino acids?

• a) Lysine

• b) Histidine

• c) Aspartic acid

• d) Leucine

4.Hemoglobin has more powerful buffering action compared to plasma proteins because of:

• a) Carboxylic groups.

• b) Amino groups.

• c) Imidazole groups of histidine residues.

• d) Formation of carbaminohemoglobin.

5.The primary change in respiratory acidosis is

• a) Increase in bicarbonate concentration.

• b) Increase in pCO2.

• c) Decrease in respiratory rate.

• d) Hypoxia.

Tags

NGSS.HS-LS1-3

6.The main compensatory mechanism in respiratory alkalosis is

• a) Retention of bicarbonate

• b) Decrease in renal acid excretion

• c) Increase in Red Blood Cells.

• d) Buffer system.

Tags

NGSS.HS-LS1-3

7.Which of the following laboratory results below indicates uncompensated metabolic

alkalosis?

• a) Low p CO2, normal bicarbonate and, high pH

• b) Low p CO2, low bicarbonate, low pH

• c) High p CO2, normal bicarbonate and, low p H

• d) Normal pCO2, high bicarbonate and High Ph

Tags

NGSS.HS-LS1-3

8.- Which of the following is most appropriate for a female suffering from Insulin

dependent diabetes mellitus with a pH of 7.2, HCO3-17 mmol/L and pCO2-20 mm HG

• a) Metabolic Acidosis

• b) Metabolic Alkalosis

• c) Respiratory Acidosis

• d) Respiratory Alkalosis

9- Which of the following laboratory results below indicates compensated metabolic alkalosis?

• a) Low p CO2, normal bicarbonate and, high pH

• b) Low p CO2, low bicarbonate, low pH

• c) High p CO2, normal bicarbonate and, low p H

• d) High pCO2, high bicarbonate and High pH

10. A student is nervous for a big exam and is breathing rapidly, what do you expect out

of the followings

• a) Metabolic Acidosis

• b) Metabolic Alkalosis

• c) Respiratory Acidosis

• d) Respiratory Alkalosis

Tags

NGSS.HS-LS1-3