Learning objective – to learn about aerobic and anaerobic respiration.
All living cells need energy to stay alive. Respiration is a chemical reaction
that occurs in all living cells to produce energy.
There are two types of respiration:
Aerobic respiration can only occur in the presence of oxygen. Oxygen taken
in from the air combines with the glucose take from food. The two combined
Cabon dioxide, water and energy is released as well. Respiration occurs in a
There are many uses for the energy released from respiration. It is used to
build larger molecules from smaller molecules. An example of this is making
protein from amino acids In animals the energy used from respiration can be
used for movement.
For the muscles to contract energy is required In mammals and birds, those
animals who are considered to be warm blooded, require the energy produced
from respiration to maintain a constant body temperature In plants, the energy
is required to build larger molecules such as starch, proteins and nitrates.