• Organisms must obtain food to provide?energy
  • Energy is necessary to carry out life processes e.g. movement, respiration and excretion

Nutrition in plants

• Plants use?sunlight, carbon dioxide?and?water?to produce?oxygen?and?glucose?in the process of?photosynthesis
• Because plants?create their own food for energy, they are described as being?autotrophic

Nutrition in animals

• Animals consume other?living organisms?in order to obtain the?energy?they require
• They break down larger complex molecules into simpler molecules through the process of?digestion
• As animals obtain their food from a?range of different sources, they are described as being?heterotrophic

Autotrophs make their own food whereas heterotrophs obtain it from a range of food sources

• Respiration?is a?chemical reaction?carried out in?all?living organisms
• Energy?is released from?glucose?either in the presence of oxygen (aerobic respiration) or the absence of oxygen (anaerobic respiration)
• The reactions ultimately result in the production of?carbon dioxide?and?water?as waste products
• Energy is transferred in the form of?ATP

The equation for aerobic respiration