9700/11 Biology May Jun 2011 Online Test | Cambridge AS and A Level MCQ
CIE
AS & A Level
Biology (9700)
شهریور
2011
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
A section of a DNA molecule has the coding sequence: AGGCAATGGC.
Which statements are correct?
1) This coding sequence contains 3 pyrimidines.
2) The double-stranded DNA of this section contains 26 hydrogen bonds between complementary bases.
3) The double-stranded DNA of this section has 20 sugar-phosphate bonds.