1. Besides RBC blood plasma also carries \[O_{2}\] in dissolved state. The percentage is
a) 3%
b) 97%
c) 70%
d) 7%
Explanation: Besides RBC blood plasma also carries \[O_{2}\] in dissolved state. The percentage is 3%
2. \[CO_{2}\] is transported
a) By RBC
b) As bicarbonates
c) In dissolved state through plasma
d) All of these
Explanation: All of these
3. Blood entering the lung is rich in
a) Oxygen
b) Carbon dioxide
c) Urea
d) More RBCs
Explanation: Carbon dioxide
4. The majority of \[CO_{2}\] is transported as
a) Carbonates
b) Bicarbonates
c) Carbaminohaemoglobin
d) Dissolved state in blood
Explanation: The majority of \[CO_{2}\] is transported as bicarbonates.
5.Oxygen is transported in blood mainly by
a) Blood plasma
b) Leucocytes
c) Thrombocytes
d) Erythrocytes
Explanation: Oxygen is transported in blood mainly by erythrocytes.
6. Blood transport of \[CO_{2}\] occurs in three forms. The correct percentages of CO2 in these forms
are
Explanation: 20-25 % 70% 7%
7. Each molecule of haemoglobin can carry at the maximum of _______ molecules of \[O_{2}\]
a) 1
b) 2
c) 3
d) 4
Explanation: Each molecule of haemoglobin can carry at the maximum of 4 molecules of \[O_{2}\]
8. Under a given oxygen concentration in blood, dissociation of oxyhaemoglobin will increase if
a) pH of blood falls
b) pH of blood rises
c) \[CO_{2}\] concentration in blood falls
d) Free fatty acid concentration in blood falls
Explanation: Under a given oxygen concentration in blood, dissociation of oxyhaemoglobin will increase if pH of blood falls
9. The blood coming out of lungs is richer than that one entering into lungs in
a) \[CO_{2}\]
b) \[O_{2}\]
c) Both (a) and (b)
d) None of these
Explanation: \[O_{2}\]
10. When partial pressure of \[CO_{2}\left(pCO_{2}\right)\] rises, the oxygen dissociation curve of haemoglobin at
37°C will
a) Shift towards right
b) Shift towards left
c) Become irregular
d) Remains unchanged
Explanation: Shift towards right