Errors

• Benedicts solution = strongly heated
• iodine = brown before reaction
• Benedicts solution has a capital letter B
• The pH of each region of the digestive system is different to maintain optimum pH for digestive enzymes
• One factor (besides pH) that would ensure accurate results from an artificial gut = temperature
• role of lipase = breaks down lipids into fatty acid and glycerol
• If digestion is mentioned, state what the food group is digested into ALWAYS
• reasons why scientists prefer to use artifical gut than human for trials =

  1. easier to control temp
  2. no need to find volunteers
• With a numeracy question, always follow the trend of the numbers in the question (e.g. round to same s.f)
• % that value is greater than other = new value - old , ans / old x 100
• you can not stop heat escaping, you can reduce it