9700/12 Biology May Jun 2015 Online Test | Cambridge AS and A Level MCQ
CIE
AS & A Level
Biology (9700)
شهریور
2015
مشاهده نمونه سوال
شامل مباحث:
AS Level
تعداد سوالات: 40
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
60 دقیقه
پیش نمایش صفحه اول فایل
Gama Admin In an investigation into the immune response, a volunteer was exposed to two different antigens, X and Y.
The relative antibody concentration in the blood was measured at regular intervals over 60 days.
The graph shows the time when the volunteer was exposed to each antigen and the antibody concentration against time for antigens X and Y.
