Unit 1 Biology January 2009

The following questions should be answered in accordance to the following table:

1. Choose the amino acid coded for by codon 85.

2. Choose the sequence of amino acids found in the polypeptide chain that is coded for by this part of the DNA strand.

3. If codon 89 coded for the last amino acid in the polypeptide chain, choose the option that represents codon 90.

4. Choose the sequence of bases on a molecule of messenger RNA (mRNA) synthesised from this part of the DNA molecule.

5. Choose the statement that best describes what the polypeptide chain would be like if the 90th codon was ACT and the 91st codon was CTT on the DNA molecule