Bulk of carbon dioxide (CO2) released from body tissue into the blood is present as 

  • bicarbonate in blood plasma and RBCs

  • free CO2 in blood plasma

  • 70% carbamino - haemoglobin and 30% as bicarbonate

  • carbamino - haemoglobin in RBCs

The majority of carbon dioxide produced by our body cells is transported to the lungs

  • dissolved in the blood

  • as bircarbonates

  • as carbonates

  • attached to haemoglobin

The energy -releasing metabolic process in which substrate is oxidised without an external electron acceptor is called

  • glycolysis

  • fermentation

  • aerobic respiration

  • photorespiration

Person with blood group AB is considered as universal recipient because he has
  • Both A and B antigens on RBC but no antibodies in the plasma

  • Both A and B antibodies in the plasma

  • No antigen or RBC and no antibody in the plasma

  • Both A and B antigens in the plasma but no antibodies

What is the vital capacity of our lungs?

  • Inspiratory reserve volume plus tidal volume

  • Total lung capacity minus expiratory reserve volume

  • Inspiratory reserve volume plus expiratory reserve volume

  • Total lung capacity minus residual volume

Load more