Class notes
Life science
- Course
- Life science
- Institution
- 11th Grade
Life science grade 11 term 3 notes
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GASEOUEXCHANG
G RA D
,INTRODUCTION
• Breathing is a mechanical process of taking oxygen into the lu
• Cellular respiration refers to a chemical process which takes p
within cells in order to release energy. Plants and animals nee
energy for survival.
• Gaseous exchange is a physical process which involves the
exchange of gases between the air and the blood in the lungs
Organisms are structurally suited to ensure that the process o
exchange of gases is optimised.
, I M P O R TA N T A S P E C T S O F G A S
EXCHANGE:
• Structure to function: how the organism is designed to carry
gaseous exchange
• Regulation and control of breathing in humans
• How the amounts of gases are kept at manageable levels in
blood
• Disease and certain life choices can impact negatively on
effective gaseous exchange. Breathing can be impaired, and
affects the general health of an individual
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