K.C.S.E Biology Q & A - MODEL 2003PP1QN13

K.C.S.E Biology Q & A - MODEL 2003PP1QN13

The diagram below shows gaseous exchange in tissues.

a) Name the gas that diffuses:
i) To the body cells
ii) From the body cells
b) Which compound dissociates to release the gas named in (a) (i) above?
c) i) what is tissue fluid?
ii) What is the importance of tissue fluid?
d) Name the blood vessel with the highest concentration of:
i) Glucose
ii) Carbon dioxide

answers

​a) i) Oxygen
ii) Carbon dioxide
b) Oxyhaemoglobin
c) i) The blood plasma except blood cells and proteins; that has
 filtered out of the capillaries.
ii) It is a medium of exchange of substances/ materials 
between capillaries and body cells; supply nutrients to cells / supply oxygen to cells / remove waste products from cells.
d) i) Hepatic portal vein
ii) Pulmonary artery