5090/12 Biology Oct Nov 2020 Quiz | Cambridge O-Level MCQ
Cambridge
O-Level
Biology (5090)
دی
2020
مشاهده نمونه سوال
شامل مباحث:
تعداد سوالات: 40
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
60 دقیقه
پیش نمایش صفحه اول فایل
zivar sushu Four groups of people (A, B, C and D) were exposed to infection by a pathogenic virus. Researchers measured the level of antibodies in their blood before and after they were infected. The results are summarised in the graphs. PAL is the Protective Antibody Level – the level required to give protection from the virus.
Which…
