Amino acids are the building blocks of proteins. Which are the basic amino acids? (1 mark) 2.) What is the single letter code sequence of the peptide structure below? (2 marks) 3. Which one of the protein secondary structures proposed by Corey and Pauling is stabilised by hydrogen bonding between the amino groups and carbonyl groups found four residues apart in the peptide chain? (1 mark) 4. In a DNA double helix complementary bases are bound to each other by what type of bond? (1 mark) 5. If 16% of the bases found in an organism’s DNA are made up of adenine, what percentage of thymine will be found in that DNA (assume the organism’s DNA is double stranded)? (1 mark) 6. I 16% of the bases found in an organism’s DNA are made up of adenine, what percentage of cytosine will be found in that DNA (assume the organism’s DNA is double stranded)? mark) 7. Which is the main enzyme used for the replication of DNA in E. coll? mark) 8. Shown below is a DNA strand. 5 GACGTACTACGACTATGGC 3 What is the correct representation of its complementary strand?
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