CHEM2052
Barry University
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CHEM2052 Chemical Biology This paper is for St Lucia Campus students.
- Exam (elaborations) • 21 pages • 2022
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SECTION A 
ANSWER ALL QUESTIONS IN SECTION A ON THE EXAM PAPER ONLY 30 MARKS TOTAL FOR SECTION A 
 
Question 1. 
Show how uracil can form strong hydrogen bonds to adenine. The structures of all four bases present in DNA are given on the Data Sheet at the end of this exam. 
 
(3 marks) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Question 2. 
The structures of methionine and adenosine triphosphate (ATP) are shown below. 
 
 
 
Questions continue over page 
 
 
(a)	Draw the structure of the major pro...
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