Title: What is Photosynthesis | Definition from Seneca Learning
Headings: Photosynthesis
Photosynthesis
The Rate of Photosynthesis
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Content: What is Photosynthesis | Definition from Seneca Learning
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Photosynthesis
Photosynthesis takes place inside chloroplasts found in plants and algae. The reaction is endothermic, meaning that it requires energy. The source of this energy is sunlight, which is trapped by a chemical called chlorophyll inside chloroplasts in plant cells. During photosynthesis, carbon dioxide reacts with water to produce glucose and oxygen. The Rate of Photosynthesis
The four key factors affecting the rate of photosynthesis are: Chlorophyll concentration - High chlorophyll concentration gives a high rate of photosynthesis. Light intensity - Increasing light intensity increases the rate of photosynthesis because more energy is provided. However, if the light intensity is increased above a certain threshold, the rate of photosynthesis will not increase because another factor (such as temperature) is limiting the rate of the reaction. Carbon dioxide concentration - Increasing the carbon dioxide concentration increases the rate of photosynthesis because carbon dioxide is a reactant in photosynthesis. However, above a certain threshold, further increases in the carbon dioxide concentration do not increase the rate of photosynthesis because another factor (such as light intensity) is limiting the rate of reaction.