![]() If temperatures are raised above optimum, the rate of photosynthesis decreases because the enzymes denature.ġ5 BIOLOGICAL IMPORTANCE OF PHOTOSYNTHESIS It levels off at a particular point, due to other limiting factors (too little CO2 or water).ġ4 Temperature As temperature rises, the rate of photosynthesis increases until the optimum temperature is reached. too little water, or light)ġ3 Light intensity As light intensity increases, the rate of photosynthesis increases. ![]() The rate levels off due to the toxic effect of CO2 and/or because the rate was restricted by other limiting factors (e.g. As CO2 concentration increases, the rate of photosynthesis increases up to a point where the rate levels off. Low levels of CO2 result in low levels of photosynthesis. 1.2.4 1.2.6 1.2.9ġ2 EXTERNAL FACTORS: The Carbon dioxide concentration. *The more ‘ingredients’ available the faster the process INTERNAL FACTORS Adaptations of leaves pg 130 + diagram pg 131.ġ1 REVISION EXAMPLAR P2 1.1 All excluding 1.1.9 1.2.3. Enzymes control the reactions.ĩ Factors affecting the rate of photosynthesis CO2 from the atmosphere combines with H from the light phase to form carbohydrates. Forms ATP (energy carrier) O2 is released to the atmosphere H is carried to the dark phase by coenzyme. LIGHT PHASE (light dependent) Occurs in the grana Light energy: 1. ![]() The chloroplasts Redraw annotated diagram fig pg 125ĥ The detailed process See diagram fig. 1 STRAND 2: LIFE PROCESSES IN PLANTS AND ANIMALSĮquation In words: Carbon Dioxide + water + Light → Glucose +Oxygen In symbols: CO2 + H2O + Energy → C6H12O6 + O2 Requirements Enzymes Chlorophyll Product By-product
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