a) describe the process of photosynthesis, including the inputs and outputs of the two mains stages and the requirement of light in the first stage, and describe photosynthesis as an endothermic process
b) describe practical investigations into the requirements and products of photosynthesis PAG5
explain how chloroplasts in plant cells are related to photosynthesis
a) explain the mechanism of enzyme action including the active site, enzyme specificity and factors affecting the rate of enzyme-catalysed reactions, including substrate concentration, temperature and pH
b) describe practical investigations into the effect of substrate concentration, temperature and pH on the rate of enzyme controlled reactions PAG4
a) explain the effect of temperature, light intensity and carbon dioxide concentration on the rate of photosynthesis
b) describe practical investigations into the effect of environmental factors on the rate of photosynthesis PAG5
**use the inverse square law to explain changes in the rate of photosynthesis with distance from a light source **
**explain the interaction of temperature, light intensity and carbon dioxide concentration in limiting the rate of photosynthesis, and use graphs depicting the effects **
in the context of the rate of photosynthesis: a) understand and use simple compound measures such as the rate of a reaction b) translate information between graphical and numerical form c) plot and draw appropriate graphs selecting appropriate scales for axes d) extract and interpret information from graphs, charts and tables