3.4 Photosynthesis

3.4 Photosynthesis

The conversion process that transforms the energy of sunlight into chemical energy stored in sugars and other organic molecules is called photosynthesis. Photosynthesis nourishes almost the entire living world directly or indirectly.

3.2 Enzymes

3.2 Enzymes

Enzymes speed up metabolic reactions by lowering energy barriers. Each enzyme has an optimal temperature and pH. Regulation of enzyme activity helps control metabolism.

3.1 Cellular Energy

3.1 Cellular Energy

The totality of an organism’s chemical reactions is called metabolism. Metabolism is an emergent property of life that arises from orderly interactions between molecules.

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