Transfer of Energy (Cambridge International IGCSE Biology)

Spec point — 19.1.1 · State that the Sun is the principal source of energy input to biological systems Describe the flow of energy through living organisms, including light energy from the Sun and chemical energy in organisms, and its eventual transfer to the environment

Transfer of energy

• The Sun is the principal source of energy input to biological systems

• Energy flows through living organisms:

  • including light energy from the Sun and chemical energy in organisms
  • energy is eventually transferred to the environment e.g. as heat