Photosynthetic Processes and Rates — OCR GCSE Combined Science B J260
OCR GCSE Combined Science B · J260
Photosynthetic Processes and Rates
What you need to know
Describe the biological process of photosynthesis as an endothermic reaction, detailing the specific inputs and outputs of its two main stages and the absolute requirement of light in the initial stage.
Describe the proper procedures for conducting practical investigations to examine the essential requirements and resultant products of photosynthesis.
Explain the highly specialized function of chloroplasts within plant cells and their direct relationship to facilitating photosynthesis.
Explain the fundamental mechanisms of enzyme action, thoroughly covering the active site, enzyme specificity, and the various factors that influence the overall rate of enzyme-catalyzed reactions.
Describe practical methodologies for scientifically investigating how substrate concentration, temperature, and pH levels affect the rates of enzyme-controlled reactions.
Explain how environmental variables—specifically temperature, light intensity, and carbon dioxide concentration—affect the overall rate of photosynthesis.
Describe how to properly design and execute practical investigations measuring the impact of various environmental factors on photosynthesis rates.
Apply the inverse square law to mathematically explain the relationship between light source distance and photosynthesis rate.
Explain the complex, interdependent interaction among temperature, light intensity, and carbon dioxide concentration as limiting factors for photosynthesis, and accurately interpret graphical data depicting these effects.
