QBManager

BREATHING and EXCHANGE OF GASES(NCERT)

286107 Combining of haemoglobin with $O_{2}$ in lungs can be promoted by

1 increasing

C O_{2}

concentration in blood.

2 increasing

O_{2}

concentration in blood.

3 decreasing

O_{2}

concentration in blood.

4 introducing

CO

into blood.

Explanation:

(b) Combining of haemoglobin with $O_{2}$ in lungs can be promoted by increasing $O_{2}$ concentration in blood.

NCERT Page-274 / N-189

BREATHING and EXCHANGE OF GASES(NCERT)

286108 About $70$ of $C O_{2}$ is transported as

1 carbonic acid

2 darboxyhaemoglobin

3 bicarbonates

4 carbamino compounds

Explanation:

(c) About $70$ of carbon dioxide is transported as sodium bicarbonate.

NCERT (Page-274 / N-189

BREATHING and EXCHANGE OF GASES(NCERT)

286109 Oxyhaemoglobin dissociates into oxygen and deoxyhaemoglobin at

1 low

O_{2}

pressure in tissue.

2 high

O_{2}

pressure in tissue.

3 equal

O_{2}

pressure inside and outside tissue.

4 all times irrespective of

O_{2}

pressure.

Explanation:

(a) Oxyhaemoglobin is the bright red haemoglobin which is a formed by the combination of haemoglobin and oxygen from the lungs. Oxyhaemoglobin transports oxygen to the cells of the body. It dissociates into oxygen and deoxyhaemoglobin at low $O_{2}$ pressure in tissue.

NCERT Page-274 / N-189

BREATHING and EXCHANGE OF GASES(NCERT)

286110 If $O_{2}$ concentration in tissues were almost as high as at the respiratory surface:

1 oxyhaemoglobin would dissociate to supply

O_{2}

to the tissues.

2 haemoglobin would combine with more

O_{2}

to the tissues.

3 oxyhaemoglobin would not dissociate to supply

O_{2}

to the tissues.

4

C O_{2}

will interfere with

O_{2}

transport.

Explanation:

(c) Oxyhaemoglobin would not dissociate to supply $O_{2}$ to the tissues.

NCERT Page-274 / N-189

BREATHING and EXCHANGE OF GASES(NCERT)

286107 Combining of haemoglobin with $O_{2}$ in lungs can be promoted by

1 increasing

C O_{2}

concentration in blood.

2 increasing

O_{2}

concentration in blood.

3 decreasing

O_{2}

concentration in blood.

4 introducing

CO

into blood.

Explanation:

(b) Combining of haemoglobin with $O_{2}$ in lungs can be promoted by increasing $O_{2}$ concentration in blood.

NCERT Page-274 / N-189

BREATHING and EXCHANGE OF GASES(NCERT)

286108 About $70$ of $C O_{2}$ is transported as

1 carbonic acid

2 darboxyhaemoglobin

3 bicarbonates

4 carbamino compounds

Explanation:

(c) About $70$ of carbon dioxide is transported as sodium bicarbonate.

NCERT (Page-274 / N-189

BREATHING and EXCHANGE OF GASES(NCERT)

286109 Oxyhaemoglobin dissociates into oxygen and deoxyhaemoglobin at

1 low

O_{2}

pressure in tissue.

2 high

O_{2}

pressure in tissue.

3 equal

O_{2}

pressure inside and outside tissue.

4 all times irrespective of

O_{2}

pressure.

Explanation:

(a) Oxyhaemoglobin is the bright red haemoglobin which is a formed by the combination of haemoglobin and oxygen from the lungs. Oxyhaemoglobin transports oxygen to the cells of the body. It dissociates into oxygen and deoxyhaemoglobin at low $O_{2}$ pressure in tissue.

NCERT Page-274 / N-189

BREATHING and EXCHANGE OF GASES(NCERT)

286110 If $O_{2}$ concentration in tissues were almost as high as at the respiratory surface:

1 oxyhaemoglobin would dissociate to supply

O_{2}

to the tissues.

2 haemoglobin would combine with more

O_{2}

to the tissues.

3 oxyhaemoglobin would not dissociate to supply

O_{2}

to the tissues.

4

C O_{2}

will interfere with

O_{2}

transport.

Explanation:

(c) Oxyhaemoglobin would not dissociate to supply $O_{2}$ to the tissues.

NCERT Page-274 / N-189

BREATHING and EXCHANGE OF GASES(NCERT)

286107 Combining of haemoglobin with $O_{2}$ in lungs can be promoted by

1 increasing

C O_{2}

concentration in blood.

2 increasing

O_{2}

concentration in blood.

3 decreasing

O_{2}

concentration in blood.

4 introducing

CO

into blood.

Explanation:

(b) Combining of haemoglobin with $O_{2}$ in lungs can be promoted by increasing $O_{2}$ concentration in blood.

NCERT Page-274 / N-189

BREATHING and EXCHANGE OF GASES(NCERT)

286108 About $70$ of $C O_{2}$ is transported as

1 carbonic acid

2 darboxyhaemoglobin

3 bicarbonates

4 carbamino compounds

Explanation:

(c) About $70$ of carbon dioxide is transported as sodium bicarbonate.

NCERT (Page-274 / N-189

BREATHING and EXCHANGE OF GASES(NCERT)

286109 Oxyhaemoglobin dissociates into oxygen and deoxyhaemoglobin at

1 low

O_{2}

pressure in tissue.

2 high

O_{2}

pressure in tissue.

3 equal

O_{2}

pressure inside and outside tissue.

4 all times irrespective of

O_{2}

pressure.

Explanation:

(a) Oxyhaemoglobin is the bright red haemoglobin which is a formed by the combination of haemoglobin and oxygen from the lungs. Oxyhaemoglobin transports oxygen to the cells of the body. It dissociates into oxygen and deoxyhaemoglobin at low $O_{2}$ pressure in tissue.

NCERT Page-274 / N-189

BREATHING and EXCHANGE OF GASES(NCERT)

286110 If $O_{2}$ concentration in tissues were almost as high as at the respiratory surface:

1 oxyhaemoglobin would dissociate to supply

O_{2}

to the tissues.

2 haemoglobin would combine with more

O_{2}

to the tissues.

3 oxyhaemoglobin would not dissociate to supply

O_{2}

to the tissues.

4

C O_{2}

will interfere with

O_{2}

transport.

Explanation:

(c) Oxyhaemoglobin would not dissociate to supply $O_{2}$ to the tissues.

NCERT Page-274 / N-189

BREATHING and EXCHANGE OF GASES(NCERT)

286107 Combining of haemoglobin with $O_{2}$ in lungs can be promoted by

1 increasing

C O_{2}

concentration in blood.

2 increasing

O_{2}

concentration in blood.

3 decreasing

O_{2}

concentration in blood.

4 introducing

CO

into blood.

Explanation:

(b) Combining of haemoglobin with $O_{2}$ in lungs can be promoted by increasing $O_{2}$ concentration in blood.

NCERT Page-274 / N-189

BREATHING and EXCHANGE OF GASES(NCERT)

286108 About $70$ of $C O_{2}$ is transported as

1 carbonic acid

2 darboxyhaemoglobin

3 bicarbonates

4 carbamino compounds

Explanation:

(c) About $70$ of carbon dioxide is transported as sodium bicarbonate.

NCERT (Page-274 / N-189

BREATHING and EXCHANGE OF GASES(NCERT)

286109 Oxyhaemoglobin dissociates into oxygen and deoxyhaemoglobin at

1 low

O_{2}

pressure in tissue.

2 high

O_{2}

pressure in tissue.

3 equal

O_{2}

pressure inside and outside tissue.

4 all times irrespective of

O_{2}

pressure.

Explanation:

(a) Oxyhaemoglobin is the bright red haemoglobin which is a formed by the combination of haemoglobin and oxygen from the lungs. Oxyhaemoglobin transports oxygen to the cells of the body. It dissociates into oxygen and deoxyhaemoglobin at low $O_{2}$ pressure in tissue.

NCERT Page-274 / N-189

BREATHING and EXCHANGE OF GASES(NCERT)

286110 If $O_{2}$ concentration in tissues were almost as high as at the respiratory surface:

1 oxyhaemoglobin would dissociate to supply

O_{2}

to the tissues.

2 haemoglobin would combine with more

O_{2}

to the tissues.

3 oxyhaemoglobin would not dissociate to supply

O_{2}

to the tissues.

4

C O_{2}

will interfere with

O_{2}

transport.

Explanation:

(c) Oxyhaemoglobin would not dissociate to supply $O_{2}$ to the tissues.

NCERT Page-274 / N-189

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