Factors which Affect the Rate of Respiration
The rate of respiration in organisms is rarely constant. There are
several factors in that affect rate of respiration. These apply
equally to aerobic and anaerobic respiration although the
examples given here
refer to aerobic respiration
1.
Temperature:
Respiration is a chemical process therefore its rate
increases with increasing body temperature as an increasing in
temperature increases the rate of chemical change.
2.
Activity:
All body activity requires energy. Wh
en an organism
becomes active it requires more energy than when it’s inactive.
Since respiration provides energy required for the activity the rate
of respiration will correspondingly increase.
3.
Body Size:
Small organisms have high surface area to volume
ra
tio. Heat loss occurs at the surface; therefore small organisms
tend to lose heat more rapidly than larger ones. Small animals e.g.
shrews, have to maintain higher rate of respiration than larger
ones to maintain their body temperature.
4.
Age:
Young organism
s are growing and as a result require more
energy than older mature individual whose growth may slow
down or stopped. Younger individual tend to be more physically
active also. Both of these rate factors lead to increased rates of
respiration in younger or
ganism
Wednesday, October 25, 2017
Factors which Affect the Rate of Respiration
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