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DNA replication is a semi-conservative process, which creates an identical replica of an already existing DNA double helix sequence. During DNA replication, the two antiparallel DNA strands are split in t...

In myelinated axons, the myelin sheath that surround the membrane prevents action potentials forming, hence depolarisation only occurs at the nodes of Ranvier (breaks in the sheath, exposing the membrane,...

The key distinguishing feature between saturated and unsaturated fatty acids is the presence of a double bond. This double bond, present only in unsaturated fatty acids, will mean there are less hydrogen ...

(Answer supplemented with whiteboard annotations) As previously mentioned at GCSE, the sugarphosphate backbone is formed by a condensation reaction between the phosphate group of one DNA molecule and the ...

This is a topic which is common across all A-Level specifications, the questions surrounding this topic may vary from labelling diagrams, matching features in a table, or longer written styles of question...