9700/12 Biology Oct Nov 2011 Online Test | Cambridge AS and A Level MCQ
Cambridge
AS & A Level
Biology (9700)
بهمن
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
Gama Admin The sequence of bases in mRNA for the first eight amino acids in the β-polypeptide of adult haemoglobin is:
GUG–CAC–CUG–ACU–CCU–GAG–GAG–AAG.
In haemoglobin C, which is a cause of haemolytic anaemia, the sequence is:
GUG–CAC–CUG–ACU–CCU–AAG–GAG–AAG.
The coding for seven of the amino acids is listed.
Which change occurs to the amino acid sequence of adult haemoglobin to make haemoglobin C?
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