9700/11 Biology Oct Nov 2018 Online Test | Cambridge AS and A Level MCQ
CIE
AS & A Level
Biology (9700)
بهمن
2018
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 Cytosine forms two hydrogen bonds with guanine.
2 Purines and pyrimidines are different sizes.
3 Adenine forms the same number of hydrogen bonds with thymine and uracil.
4 The base pairs are of equal length.