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The compound past is used for actions that are completed and have no further relevance at present. For example, "J’ai fini mes devoirs."  

On the other hand, the imperfect...

The lock and key model only allows one type of specific substrate to form a substrate-activesite complex with each specific type of enzyme. This is due to their complementary shapes, as only one shape and...

In this question you must first look at the wording. This is a describe question and therefore a description is required but not an explanation. It is worth 5 marks so aim to describe 5 or more reasons ho...

Covalent bonding is the sharing of a pair of electrons between atoms to make molecules e.g. CO₂, whereas Ionic bonding is the transfer of electrons from one atom to the other to m...

Ablative absolutes are a common type of phrase found in Latin. They seem a little complex at first, but once you learn to recognise them, they are one of the easiest kinds of phrase to notice and translat...