9700/13 Biology May Jun 2012 Online Test | Cambridge AS and A Level MCQ
CIE
AS & A Level
Biology (9700)
شهریور
2012
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
Which statements about complementary base pairing are correct?
1) Purines and pyrimidines are different sizes.
2) It occurs during translation.
3) The base pairs are of different length.
4) Uracil forms two hydrogen bonds with adenine.