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How are organisms in an ecosystem interdependent? - OCR 21st CenturyBiosynthesis

Carbohydrates, proteins and lipids are required by humans. The digestive system breaks down large molecules. Nutrients are passed to other organisms in a food web. Enzymes are biological catalysts.

Part of Combined ScienceLiving together - Food and ecosystems

Biosynthesis

Some of the glucose produced by photosynthesis is used by plants for .

Glucose is the starting point for the of materials that plants need to live.

The glucose not used for respiration is used in the following ways:

An image showing the cycle of gluecose.