Unit 1 Biology June 2015

1. DNA and mRNA both





2. One advantage of DNA having two complementary strands is that





3. Analysis of a sample of DNA found that 40% of the nucleotides contained cytosine. In the same sample of DNA the percentage of nucleotides containing adenine would be





Use the following diagram to answer Questions 4 to 7:

4. Two molecules of P can be joined together by





5. Molecule R is





6. One of the products of the hydrolysis of molecule S is





7. A condensation reaction between two molecules of Q forms