The diagram below is of a section of DNA.
(i) Complete the diagram by entering the letter for each base on the corresponding DNA strand. Thymine and Guanine are shown by the letters T & G.
Image
[ 1 ]
(ii) State the name of the bases represented by the letters A & C.
C:
A:
[ 1 ]
(iii) Identify the components of DNA represented by the letters X and Y.
X:
Y:
[ 2 ]
(iv) Nucleic bases are described as purines and pyrimidines. State which bases are purines and which are pyrimidines.
Purines:
Pyrimindines:
[ 2 ]
(vi) Nucleic bases are sometimes referred to as nitrogenous bases. Explain this statement.
[ 1 ]
(vii) In the space below, draw and label an amino acid.
[ 2 ]
(viii) Amino acids are linked by a special bond to form the primary structure of a protein. Name this bond and state how the primary structure determines the nature of the final protein.
Name of bond:
Primary structure:
[ 2 ]
[Total: 11 ]
