Living processes
Photosynthesis and plants
Green plants absorb light in their leaves and convert it to energy by photosynthesis.
Nutrition and food tests
Food provides energy and nutrients. Why do the different components of our diet have various sources and functions?
Enzymes and digestion
Enzymes are proteins that act as biological catalysts, meaning they speed up reactions without being used up.
The respiratory system, breathing and respiration
How is the human respiratory system adapted to allow air to pass in and out of the body, and for efficient gas exchange to happen?
The nervous system
The brain and spinal cord form the central nervous system (CNS). How does the CNS control and coordinate responses between receptors and effectors?
Hormones
Find out how hormones play an important role in maintaining a constant state within the internal environment of the body in response to changes both inside and out.
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