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AQA GCSE Biology Topic 4 - Bioenergetics






Below is everything the examiners think you know, if you're not sure of something click on the link to watch my YouTube video explanation. For a copy of these you can print off, get the FREE revision guide I wrote for you. 


 • I can recall the word and symbol equation for photosynthesis

  • I can describe the transfer of energy in photosynthesis 

 • I can explain how different factors affect the rate of photosynthesis. Including temperature, light intensity, carbon dioxide concentration and the amount of chlorophyll 

 • I can explain that more than one factor may be limiting the rate of photosynthesis Higher tier only 

 • I can explain the graphs showing how a limiting factor will affect the rate of photosynthesis  Higher tier only 

 • I can describe what the glucose produced in photosynthesis can be used for

  • I can recall the respiration is an exothermic reaction 

 • I can recall the word and symbol equation for respiration 

 • I can describe the process of aerobic respiration; in regard to oxygen, the products and the amount of energy• I can describe the process of anaerobic respiration; in regard to oxygen, the products and the amount of energy 

 • I can describe what an organism needs energy for 

 • I can recall the equation for anaerobic respiration 

 • I can recall the equation for anaerobic respiration in plants and yeast cells 

 • I can explain the importance of anaerobic respiration in plants and yeast cells for the food industry 

 • I can recall the need for energy during exercise 

 • I can describe the effect of exercise on the body 

 • I can define the term oxygen debt 

 • I can explain how an oxygen debt can be repaid Higher tier only 

 • I can define the term metabolism 

 • I can explain the role of sugars; amino acids; fatty acids; glycerol; carbohydrates; proteins and lipids 

 • I can describe the use of energy in the synthesis of new molecules 

 • I can describe the conversion of glucose to starch, glycogen and cellulose 

 • I can describe the formation of lipids from glycerol and fatty acids 

 • I can describe the synthesis of proteins from amino acids 

 • I can describe the synthesis of amino acids from glucose and nitrate ions 

 • I can describe the breakdown of proteins, forming urea