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What is the imperfect tense and how do I conjugate it?

The imperfect tense describes something one 'used to do'. It is less specific than the perfect tense, which describes a specific action taking place at a specific time, and is used to describe more general a...
MJ
Answered by Michael J. • French tutor
3762 Views

Outline the lock and key mechanism of enzyme-controlled reactions

Enzymes are proteins that catalyse specific biological reactions in the body. These proteins have a specific 3D structure known as a teritary structure, with a specialised domain known as an 'active site' th...
MJ
Answered by Michael J. • Biology tutor
7744 Views

Explain how skeletal muscle contraction is stimulated

A nerve impulse travelling down a motor neurone causes the release of acetylcholine from the synpatic knob into the synaptic cleft. This then diffuses across the synaptic cleft down its concentration gradien...
MJ
Answered by Michael J. • Biology tutor
4229 Views

How do I analyse a source?

In order to understand a source and write the best possible answer, there are seven easy steps to take: 1. What does the source say? We need to briefly look at the source to understand what it is. For exampl...
AP
Answered by Alexandra P. • History tutor
4301 Views

Which preposition do I use with countries?

The use of prepositions to say you are 'in' a country is actually quite simple in French. Your two options are 'en' (which is more common) and 'au'. 'Au' is used with masculine countries that begin with a co...
OA
Answered by Owen A. • French tutor
5138 Views