1. a What do DNA and RNA stand for?
Draw a diagram of a single DNA nucleotide.
c Which enzyme turns DNA nucleotides into a polynucleotide?
d Explain what is meant by the term complementary base pairing.
e What are the 2 essential functions of DNA?
f What are the 2 main types of RNA and what are their similarities and differences?
2. Describe DNA replication.
3. a What are the two stages of protein synthesis?
Which enzyme is responsible for forming mRNA?
c How many types of tRNA are there?
d Draw a flow chart summarising protein synthesis.
4. a. List the three types of gene mutation.
b. Explain why two of these types have a greater effect than the others.
c. State what the other type of mutation is