level/arbitrary units Number of men with 0 8 0 0 side effects The scientists concluded that letrozole is a safe and effective treatment for male infertility. Evaluate this conclusion. (6) (Total for Question 8 = 6 marks) Mark Scheme Question Answer Additional Mark number guidance 8 An evaluation that makes reference to the following points: letrozole does improve male fertility (1) sperm concentration increases/sperm motility increases (1)
level/arbitrary units Number of men with side effects 0 8 0 0 The scientists concluded that letrozole is a safe and effective treatment for male infertility. Evaluate this conclusion. (6) (Total for Question 8 = 6 marks) Mark Scheme Question number Answer Additional guidance Mark 8 An evaluation that makes reference to the following points: letrozole does improve male fertility (1) sperm concentration increases/sperm motility increases (1)
international-gcse-biology-examplar-booklet.docx