Limiting Factors and CO2 Enrichment Experiments Guided Notes

Limiting Factors

Conditions that limit the rate of photosynthesis, including light intensity, CO2 concentration, and temperature.

Light Intensity

The brightness of light, which affects the rate of photosynthesis until a maximum rate (Vmax) is reached.

Rate of Photosynthesis

The speed at which photosynthesis occurs, influenced by conditions such as light intensity, CO2 concentration, and temperature.

Vmax

The maximum rate of photosynthesis that can be achieved under optimal conditions.

CO2 Concentration

The amount of carbon dioxide available, which initially increases the rate of photosynthesis until a maximum rate (Vmax) is reached.

Temperature

A key variable that affects the rate of photosynthesis; increases in temperature initially raise the rate, but excessive heat can cause enzyme denaturation.

Enzyme Denaturation

The process where enzymes lose their structure and functionality typically due to high temperatures.

CO2 Enrichment Experiments

Studies that investigate the effects of increased CO2 levels on plant growth and photosynthesis.

Greenhouses with CO2 Manipulation

Controlled environments where CO2 concentrations are increased to study effects on biomass compared to a control.

Free-Air Carbon Dioxide Enrichment (FACE) Experiments

Field experiments where CO2 is piped and released into the atmosphere for study in natural ecosystems.