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A large proportion of oxygen is left unu...

A large proportion of oxygen is left unused the human blood even after its uptake by the body tissue. This `O_(2)`

A

acts as a reserve during muscular exercise

B

raises the `pco_(2)` of blood to 75 mm of hg

C

is enough to keep oxyhaemoglobin sat uration at 96%

D

helps in releasing more `O_(2)` to the epithelial tissues

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The correct Answer is:
A
The percentage of blood that gives up its oxygen as it passes through the tissure capillaries is called the utilization coefficient .The normal value of this is 25 prcent i.e 25% of the oxygenated haemoglobin gives its oxygen to the tissues during stenous exercise the utilization coefficient in the entire body increase to 75 to 75% so that more oxygen is given to the tissues
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Which of the following statements are true/false A.The blood transports CO_(2) comparatively easily because of its higher solubility B.Approximately 8.9% of CO_(2) is transported being dissovled in the plasma of blood C. The carbon dioxide produced by the tissues, diffuses passively into the blood stream and passes into red blood corpsucles and react with water to form H_(2)CO_(3) D.The oxyhaemoglobin(HbO2) of the erythrocytes is basic. E. .The chlorde ions diffuse from palsma into the erythrocytes to maintain ionic balance.

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Bulk of carbon dioxide (CO_(2)) released from body tissues into the blood is present as

Bulk of carbon dioxide (CO_(2)) released from body tissues into the blood is present as

Bulk of carbon dioxide (CO_(2)) released from body tissues into the blood is present as

A body at a temperature of 50^(@) F is placed outdoors where the temperature is 100^(@) F. If the rate of change of the temperature of a body is proportional to the temperature differenece between the body and its surrounding medium. If after 5 min the temperature of the body is 60^(@) F, find (a) how long will take the body to reach a temperature of 75^(@) F and (b) the temperature of the body after 20 min.

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TRUEMAN BIOLOGY-BREATHING AND EXCHANGE OF GASES -MULTIPLE CHOICE QUESTIONS
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  3. A large proportion of oxygen is left unused the human blood even after...

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  4. Which one of the following is the correct statement for respiration in...

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  8. Oxygen dissociation curve of haemoglobin is

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  9. PH of blood in arteries and veins is

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  10. The left lung of human is divided in to

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  11. A major percentage of O(2) is transported by RBCs in the blood.What p...

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  12. What percent (%) of CO(2) is transported as bicarbonate (HCO(3)) with ...

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  13. Muscles contains a red coloured oxygen storing pigment called :-

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  14. Expiratory capacity is

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  15. The urge to inhale in humans results from

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  16. A person is suffering from frequent episodes of nasal discharge, nasal...

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  17. The exchange of materials between blood and interstitial fluid is by

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  18. Oxygen carrying capacity of human blood is reduced due to the pollutio...

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  19. Haemoglobin value for a healthy adult male is

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