Top answers

What's the difference between imperfect and passé composé?

Passé composé is a past tense used to describe a completed action. For example, I went to the cinema (Je suis allé(e) au cinéma). Imperfect is also a past tense. This time it is used to talk about something ...
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Answered by Emily G. • French tutor
4094 Views

How is an action potential fired?

When a neurone is at rest, the outside of the neurone is more positive than the inside. This is due to the sodium-potassium pump which actively pumps 3 Na+ outside the cell, whilst at the same time pumping 2...
EB
Answered by Eleanor B. • Biology tutor
4887 Views

Define Enzyme and Active site

Enzymes are biological catalysts that are formed from globular proteins. Active site is the molecule surface space where the substrate binds and catalysis occurs. Extra points: - Enzymes are NOT used up in a...
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Answered by Xin Yan H. • Biology tutor
8423 Views

What are the most common questions that come up in medical interviews?

Interviews are a way for the medical school to get a better understanding of you. Some medical schools such as Edinburgh don't interview at all, though the majority do. The interview is not the be-all and en...
SJ
3412 Views

Describe how a delta forms.

Deltas form where rivers transporting sediment enter a calmer body of water such as a lake or sea and there is a decrease in the energy of the system. The reduction in energy of the flow causes the sediment ...
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Answered by Ben W. • Geology tutor
6702 Views