9700/12 Biology Oct Nov 2021 Online Test | Cambridge AS and A Level MCQ
CIE
AS & A Level
Biology (9700)
بهمن
2021
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
The diagram shows the outline structure of two nucleotide bases which occur in DNA.
This pair is held together by two hydrogen bonds, shown as dashed lines.
Which row correctly identifies these two nucleotide bases?