As biology paper 1 2 Study guides, Class notes & Summaries

Edexcel A Level Biology Paper 2 Mark Scheme June 2022: GCE In Biology B (9BI0/02) Paper 2: Advanced Physiology, Evolution and Ecology. The only correct answer is: D phosphodiester A is incorrect as this bond is found in lipids B is incorrect as this bond is found in carbohydrates C is incorrect as this bond pair bonds nucleotides (1) Question Number Answer Additional Guidance Mark 1(b) A description that makes reference to the following points: • {DNA polymerase} {joins the sugar phos...

Edexcel A Level Biology Paper 2 Mark Scheme June 2022: GCE In Biology B (9BI0/02) Paper 2 | Advanced Physiology, Evolution and Ecology. A calculation that makes reference to the following points: • correct calculation of percentage cytosine (1) • correct calculation of number of nucleotides (1) 15 % cytosine 15 % of 10 000 = 1500 Correct answer with no working gains full marks One mark for 15 % (2) Question Number Answer Additional Guidance Mark 2 (a)(i) The only correct answer is...