GASEOUS EXCHANGE

Question 1

explain the transport of carbon

Answer 1

Carbon Dioxide from the tissues diffuses into the blood capillaries, they react with water in the blood plasma to form carbonic acid and bicarbonate ions

Question 2

name the three ways carbon dioxide is transported

Answer 2

bicarbonate ions
blood plasma
carbhaemoglobin

Question 3

explain the transportation of oxygen

Answer 3

oxygen from the alveolus diffuses most of it combines with haemoglobin of red blood corpuscles to form oxyhaemoglobin

Question 4

what two ways are oxygen transported to the heart :

Answer 4

oxyhaemoglobin

solution of blood plasma

Question 5

what is breathing?

Answer 5

the process of obtaining oxygen from the atmosphere and eliminating carbon dioxide from our bodies

Question 6

why is gaseous exchange necessary?

Answer 6

ensures body of an organism receives oxygen from the air to pass through cells for cellular respiration

Question 7

why does carbon dioxide need to be eliminated?

Answer 7

accumulated amounts of carbon dioxide becomes toxic to organism
reduces blood pH, thus reducing enzyme action

Question 8

what are the two stages breathing takes place in?

Answer 8

inhalation and exhalation

Question 9

what is inhalation?

Answer 9

when rich in oxygen air is drawn to the lungs as a result of the breathing muscles

Question 10

what is exhalation?

Answer 10

when rich in carbon dioxide air is expelled from the lungs as a result of the breathing muscles