9700/12 Biology May Jun 2013 Online Test | Cambridge AS and A Level MCQ
Cambridge
AS & A Level
Biology (9700)
شهریور
2013
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 Immune response to a vaccination against a virus can be assessed by making three measurements:
1) the concentration of anti-virus antibody in the blood
2) the time taken to increase the antibody concentration significantly after a booster vaccination
3) the number of virus-specific lymphocytes per $c{m^3}$ blood.
What describes the immunity of an individual when the values of 1, 2 and 3 are all low ten years…
پرسش و پاسخ های مشابه
سوال کنید یا به سوالات دیگران پاسخ دهید ...