Home
Class 12
BIOLOGY
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

Text Solution

Verified by Experts

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
Promotional Banner

Topper's Solved these Questions

  • BODY FLUIDS AND CIRCULATION

    TRUEMEN BIOLOGY ENGLISH|Exercise Multiple Choice Questions|196 Videos

  • CELL CYCLE AND CELL DIVISION

    TRUEMEN BIOLOGY ENGLISH|Exercise MULTIPLE CHOICE QUESTIONS|156 Videos

Similar Questions

Explore conceptually related problems

A large proportion of oxygen remain unused in the human blood even after its uptake by the body tissues. This O_(2)

(a) Name the stage of plasmodium that gains entry into the human body. (b) Trace the stages of in the body of female anopheles after its entry. (c) Explain the cause of periodic recurrence of chill and high fever during malarial attack in humans.

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 chlorde ions diffuse from palsma into the erythrocytes to maintain ionic balance

If the blood does not deliver adequate O_(2) to the tissues, it is called

Oxygen is of vital importance for all of us . Oxygen enters the body via the lungs and is transported to the tissues in our body by blood . There it can deliver energy by the oxidation of sugars. C_(6)H_(12)O_(6) + 6O_(2) rarr 6CO_(2) + 6H_(2)O This reaction releases 400 KJ of energy per mole of oxygen O_(2) uptake by blood is at four heme (Hm) group in this protein hemoglobin (Hb). Free Hm consists of an Fe^(2+) giving HmO_(2) complex. Carbon monoxides can be complexed similarily giving a Hm CO complex . CO is poison as it bonds more strongly to Hm than O_(2) does. The equilibrium constant K_(f) for the reaction: Hm+ CO hArr HCO " "........(i) is 1000 times larger than the equilibrium constant K_(2) for the reaction: Hm + CO_(2) hArr HmO_(2)" " ........(ii) Each Hb molecules can take up four molecules of O_(2) absorbs a fraction of this amount, depending on the oxygen pressure , as shown in figure1 (curve 1) . Also shown are the curve (2) and (3) for blood with two kinds of dificient Hb . These occur in patients with certain hereditary diseases. Relevant data , O_(2) pressure in lungs is 15 KPa , in the muscles it is 2KPa . The maximum flow of blood through heart and lungs is 4 xx 10^(-4)m^(-3)s^(-1) . The red cells in blood occupy 40% of the volume, inside the cells the concentration of Hb has a molar mass of 64 kg "mol"^(-1) R=8.314 J "mol"^(-1) K^(-1) , T=298k . Using the relation between K and the standard Gibbs energy DeltaG^(@) for a reaction, calculated the difference between the DeltaG^(@) values for the home reactions (i) and (ii).

The diagram shows the heart with its main blood vessels Which blood vessels carry oxygenated blood to the body tissues and deoxygenated blood away from the body tissues ?

How does the hamoglobin present In our blood transport oxygen to the tissues of the body ?

The given figure shows the diagrammatic represtation of exchange of gases at the alveolus and the body tissues with blood and trasport of oxygen and carbon dioxide. Identify the blood vessles A to D.

Which of the following statement (s) is (are) true about heart? (i) Left atrium receives oxygenated blood from different parts of body while right atrium receives deoxygenated blood from lungs (ii) Left ventricle pumps oxygenated blood to different body parts while right ventrivle pumps deoxygenated blood to lungs (iii) Left atrium transfers oxygenated blood to right ventricle which sends it to different body parts (iv) Right atrium receives deoxygenated blood from different part of the body while left ventricle pumps oxygenated blood to dofferent parts of the body

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

TRUEMEN BIOLOGY ENGLISH-BREATHING AND EXCHANGE OF GASES -MULTIPLE CHOICE QUESTIONS
  1. Which two of the following changes (i-iv) usually tend to occur in the...

    Text Solution

    |

  2. The figure given below shows a small part of human lung where exchange...

    Text Solution

    |

  3. A large proportion of oxygen is left unused the human blood even after...

    Text Solution

    |

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

    Text Solution

    |

  5. People who have migrated from the planes to an area adjoining Rohtang ...

    Text Solution

    |

  6. Which one of the following is a possibility for most of us in regards ...

    Text Solution

    |

  7. Bulk of carbon dioxide (CO(2)) released from body tissues into the blo...

    Text Solution

    |

  8. Oxygen dissociation curve of haemoglobin is

    Text Solution

    |

  9. PH of blood in arteries and veins is

    Text Solution

    |

  10. The left lung of human is divided in to

    Text Solution

    |

  11. A major percentage (97%) of O(2) is transported by RBCs in the blood. ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  14. Expiratory capacity is

    Text Solution

    |

  15. The urge to inhale in humans results from

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  19. Haemoglobin value for a healthy adult male is

    Text Solution

    |

  20. The exchange of gases between blood capillaries and alveoli in the lun...

    Text Solution

    |