278124
What percentage of oxygen is carried by haemoglobin?
1 90
2 97
3 23
4 73
Explanation:
(b) About $97\text{ }\!\!%\!\!\text{ }$ of ${{\text{O}}_{2}}$ is transported by RBC. ${{\text{O}}_{2}}$ binds with haemoglobin (red coloured iron containing pigment present in the RBCs) to form oxyhaemoglobin. This process is known as oxygenation.
NCERT Page-274 / N-189
BREATHING and EXCHANGE OF GASES
278125
Most oxygen is carried by the blood (i). Most carbon dioxide is carried by the blood
1 (i) attached to haemoglobin.
(ii) in the form of bicarbonate ions.
2 (i) dissolved in plasma .
(ii) dissolved in plasma.
3 (i) in the form of${{\text{H}}^{+}}$ions .
(ii) in the form of bicarbonate ions.
4 (i) attached to haemoglobin
(ii) attached to haemoglobin.
Explanation:
(a) Most oxygen is carried by haemoglobin and most 80. (b)
NCERT Page-274 / N-189
BREATHING and EXCHANGE OF GASES
278126
$\text{C}{{\text{O}}_{2}}$ dissociates from carbaminohaemoglobin when
1 $\text{pC}{{\text{O}}_{2}}$ is high and $\text{p}{{\text{O}}_{2}}$ is low
2 $\text{p}{{\text{O}}_{2}}$ is high and $\text{pC}{{\text{O}}_{2}}$ is low
3 $\text{pC}{{\text{O}}_{2}}$ and $\text{p}{{\text{O}}_{2}}$ are equal
4 None of the above
Explanation:
(c) Every $100\text{ml}$ of deoxygenated blood delivers approximately $4\text{ml}$ of $\text{C}{{\text{O}}_{2}}$ to the alveoli.
NCERT Page-274 / N-189
BREATHING and EXCHANGE OF GASES
278128
Enzyme involved in $\text{C}{{\text{O}}_{2}}$ transport in blood is:
1 Carboxylase
2 Carboxykinase
3 Carbonic anhydrase
4 None of these
Explanation:
(b) Protein haemoglobin acts as an oxygen carrier in the blood.
NCERT Page-275 / N-190
BREATHING and EXCHANGE OF GASES
278129
The correct statement in respect of protein haemoglobin is that it]#
1 maintains blood sugar level.
2 acts as an oxygen carrier in the blood.
3 functions as a catalyst for biological reactions.
4 forms antibodies and offers resistance to diseases.
Explanation:
(b) Haemoglobin is an iron-containing protein in red blood cells that is responsible for transporting oxygen to the tissues and removing carbon dioxide from them. Carbonic anhydrase helps in transport of carbon dioxide.
278124
What percentage of oxygen is carried by haemoglobin?
1 90
2 97
3 23
4 73
Explanation:
(b) About $97\text{ }\!\!%\!\!\text{ }$ of ${{\text{O}}_{2}}$ is transported by RBC. ${{\text{O}}_{2}}$ binds with haemoglobin (red coloured iron containing pigment present in the RBCs) to form oxyhaemoglobin. This process is known as oxygenation.
NCERT Page-274 / N-189
BREATHING and EXCHANGE OF GASES
278125
Most oxygen is carried by the blood (i). Most carbon dioxide is carried by the blood
1 (i) attached to haemoglobin.
(ii) in the form of bicarbonate ions.
2 (i) dissolved in plasma .
(ii) dissolved in plasma.
3 (i) in the form of${{\text{H}}^{+}}$ions .
(ii) in the form of bicarbonate ions.
4 (i) attached to haemoglobin
(ii) attached to haemoglobin.
Explanation:
(a) Most oxygen is carried by haemoglobin and most 80. (b)
NCERT Page-274 / N-189
BREATHING and EXCHANGE OF GASES
278126
$\text{C}{{\text{O}}_{2}}$ dissociates from carbaminohaemoglobin when
1 $\text{pC}{{\text{O}}_{2}}$ is high and $\text{p}{{\text{O}}_{2}}$ is low
2 $\text{p}{{\text{O}}_{2}}$ is high and $\text{pC}{{\text{O}}_{2}}$ is low
3 $\text{pC}{{\text{O}}_{2}}$ and $\text{p}{{\text{O}}_{2}}$ are equal
4 None of the above
Explanation:
(c) Every $100\text{ml}$ of deoxygenated blood delivers approximately $4\text{ml}$ of $\text{C}{{\text{O}}_{2}}$ to the alveoli.
NCERT Page-274 / N-189
BREATHING and EXCHANGE OF GASES
278128
Enzyme involved in $\text{C}{{\text{O}}_{2}}$ transport in blood is:
1 Carboxylase
2 Carboxykinase
3 Carbonic anhydrase
4 None of these
Explanation:
(b) Protein haemoglobin acts as an oxygen carrier in the blood.
NCERT Page-275 / N-190
BREATHING and EXCHANGE OF GASES
278129
The correct statement in respect of protein haemoglobin is that it]#
1 maintains blood sugar level.
2 acts as an oxygen carrier in the blood.
3 functions as a catalyst for biological reactions.
4 forms antibodies and offers resistance to diseases.
Explanation:
(b) Haemoglobin is an iron-containing protein in red blood cells that is responsible for transporting oxygen to the tissues and removing carbon dioxide from them. Carbonic anhydrase helps in transport of carbon dioxide.
278124
What percentage of oxygen is carried by haemoglobin?
1 90
2 97
3 23
4 73
Explanation:
(b) About $97\text{ }\!\!%\!\!\text{ }$ of ${{\text{O}}_{2}}$ is transported by RBC. ${{\text{O}}_{2}}$ binds with haemoglobin (red coloured iron containing pigment present in the RBCs) to form oxyhaemoglobin. This process is known as oxygenation.
NCERT Page-274 / N-189
BREATHING and EXCHANGE OF GASES
278125
Most oxygen is carried by the blood (i). Most carbon dioxide is carried by the blood
1 (i) attached to haemoglobin.
(ii) in the form of bicarbonate ions.
2 (i) dissolved in plasma .
(ii) dissolved in plasma.
3 (i) in the form of${{\text{H}}^{+}}$ions .
(ii) in the form of bicarbonate ions.
4 (i) attached to haemoglobin
(ii) attached to haemoglobin.
Explanation:
(a) Most oxygen is carried by haemoglobin and most 80. (b)
NCERT Page-274 / N-189
BREATHING and EXCHANGE OF GASES
278126
$\text{C}{{\text{O}}_{2}}$ dissociates from carbaminohaemoglobin when
1 $\text{pC}{{\text{O}}_{2}}$ is high and $\text{p}{{\text{O}}_{2}}$ is low
2 $\text{p}{{\text{O}}_{2}}$ is high and $\text{pC}{{\text{O}}_{2}}$ is low
3 $\text{pC}{{\text{O}}_{2}}$ and $\text{p}{{\text{O}}_{2}}$ are equal
4 None of the above
Explanation:
(c) Every $100\text{ml}$ of deoxygenated blood delivers approximately $4\text{ml}$ of $\text{C}{{\text{O}}_{2}}$ to the alveoli.
NCERT Page-274 / N-189
BREATHING and EXCHANGE OF GASES
278128
Enzyme involved in $\text{C}{{\text{O}}_{2}}$ transport in blood is:
1 Carboxylase
2 Carboxykinase
3 Carbonic anhydrase
4 None of these
Explanation:
(b) Protein haemoglobin acts as an oxygen carrier in the blood.
NCERT Page-275 / N-190
BREATHING and EXCHANGE OF GASES
278129
The correct statement in respect of protein haemoglobin is that it]#
1 maintains blood sugar level.
2 acts as an oxygen carrier in the blood.
3 functions as a catalyst for biological reactions.
4 forms antibodies and offers resistance to diseases.
Explanation:
(b) Haemoglobin is an iron-containing protein in red blood cells that is responsible for transporting oxygen to the tissues and removing carbon dioxide from them. Carbonic anhydrase helps in transport of carbon dioxide.
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BREATHING and EXCHANGE OF GASES
278124
What percentage of oxygen is carried by haemoglobin?
1 90
2 97
3 23
4 73
Explanation:
(b) About $97\text{ }\!\!%\!\!\text{ }$ of ${{\text{O}}_{2}}$ is transported by RBC. ${{\text{O}}_{2}}$ binds with haemoglobin (red coloured iron containing pigment present in the RBCs) to form oxyhaemoglobin. This process is known as oxygenation.
NCERT Page-274 / N-189
BREATHING and EXCHANGE OF GASES
278125
Most oxygen is carried by the blood (i). Most carbon dioxide is carried by the blood
1 (i) attached to haemoglobin.
(ii) in the form of bicarbonate ions.
2 (i) dissolved in plasma .
(ii) dissolved in plasma.
3 (i) in the form of${{\text{H}}^{+}}$ions .
(ii) in the form of bicarbonate ions.
4 (i) attached to haemoglobin
(ii) attached to haemoglobin.
Explanation:
(a) Most oxygen is carried by haemoglobin and most 80. (b)
NCERT Page-274 / N-189
BREATHING and EXCHANGE OF GASES
278126
$\text{C}{{\text{O}}_{2}}$ dissociates from carbaminohaemoglobin when
1 $\text{pC}{{\text{O}}_{2}}$ is high and $\text{p}{{\text{O}}_{2}}$ is low
2 $\text{p}{{\text{O}}_{2}}$ is high and $\text{pC}{{\text{O}}_{2}}$ is low
3 $\text{pC}{{\text{O}}_{2}}$ and $\text{p}{{\text{O}}_{2}}$ are equal
4 None of the above
Explanation:
(c) Every $100\text{ml}$ of deoxygenated blood delivers approximately $4\text{ml}$ of $\text{C}{{\text{O}}_{2}}$ to the alveoli.
NCERT Page-274 / N-189
BREATHING and EXCHANGE OF GASES
278128
Enzyme involved in $\text{C}{{\text{O}}_{2}}$ transport in blood is:
1 Carboxylase
2 Carboxykinase
3 Carbonic anhydrase
4 None of these
Explanation:
(b) Protein haemoglobin acts as an oxygen carrier in the blood.
NCERT Page-275 / N-190
BREATHING and EXCHANGE OF GASES
278129
The correct statement in respect of protein haemoglobin is that it]#
1 maintains blood sugar level.
2 acts as an oxygen carrier in the blood.
3 functions as a catalyst for biological reactions.
4 forms antibodies and offers resistance to diseases.
Explanation:
(b) Haemoglobin is an iron-containing protein in red blood cells that is responsible for transporting oxygen to the tissues and removing carbon dioxide from them. Carbonic anhydrase helps in transport of carbon dioxide.
278124
What percentage of oxygen is carried by haemoglobin?
1 90
2 97
3 23
4 73
Explanation:
(b) About $97\text{ }\!\!%\!\!\text{ }$ of ${{\text{O}}_{2}}$ is transported by RBC. ${{\text{O}}_{2}}$ binds with haemoglobin (red coloured iron containing pigment present in the RBCs) to form oxyhaemoglobin. This process is known as oxygenation.
NCERT Page-274 / N-189
BREATHING and EXCHANGE OF GASES
278125
Most oxygen is carried by the blood (i). Most carbon dioxide is carried by the blood
1 (i) attached to haemoglobin.
(ii) in the form of bicarbonate ions.
2 (i) dissolved in plasma .
(ii) dissolved in plasma.
3 (i) in the form of${{\text{H}}^{+}}$ions .
(ii) in the form of bicarbonate ions.
4 (i) attached to haemoglobin
(ii) attached to haemoglobin.
Explanation:
(a) Most oxygen is carried by haemoglobin and most 80. (b)
NCERT Page-274 / N-189
BREATHING and EXCHANGE OF GASES
278126
$\text{C}{{\text{O}}_{2}}$ dissociates from carbaminohaemoglobin when
1 $\text{pC}{{\text{O}}_{2}}$ is high and $\text{p}{{\text{O}}_{2}}$ is low
2 $\text{p}{{\text{O}}_{2}}$ is high and $\text{pC}{{\text{O}}_{2}}$ is low
3 $\text{pC}{{\text{O}}_{2}}$ and $\text{p}{{\text{O}}_{2}}$ are equal
4 None of the above
Explanation:
(c) Every $100\text{ml}$ of deoxygenated blood delivers approximately $4\text{ml}$ of $\text{C}{{\text{O}}_{2}}$ to the alveoli.
NCERT Page-274 / N-189
BREATHING and EXCHANGE OF GASES
278128
Enzyme involved in $\text{C}{{\text{O}}_{2}}$ transport in blood is:
1 Carboxylase
2 Carboxykinase
3 Carbonic anhydrase
4 None of these
Explanation:
(b) Protein haemoglobin acts as an oxygen carrier in the blood.
NCERT Page-275 / N-190
BREATHING and EXCHANGE OF GASES
278129
The correct statement in respect of protein haemoglobin is that it]#
1 maintains blood sugar level.
2 acts as an oxygen carrier in the blood.
3 functions as a catalyst for biological reactions.
4 forms antibodies and offers resistance to diseases.
Explanation:
(b) Haemoglobin is an iron-containing protein in red blood cells that is responsible for transporting oxygen to the tissues and removing carbon dioxide from them. Carbonic anhydrase helps in transport of carbon dioxide.