Pearson Edexcel Level 3 GCE Biology B Advanced PAPER 2: Advanced Physiology, Evolution and Ecology 9BI0/02Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in
...
Pearson Edexcel Level 3 GCE Biology B Advanced PAPER 2: Advanced Physiology, Evolution and Ecology 9BI0/02Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in a box . If you change your mind about an
answer, put a line through the box and then mark your new answer with a cross .
1 The diagram shows DNA replication.
X
(a) Which of the following is the name of the bond labelled X on the diagram?
(1)
A ester
B glycosidic
C hydrogen
D phosphodiester
(b) Describe the roles of three named enzymes involved in DNA replication.
(3)
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