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All enzymes have active sites which are highly specific to their role within the body- the active site being the part of the enzyme in which the enzyme and the substrate (the thing it is reacting with) in...

The imperfect tense for all regular verbs in this tense is created by removing the ar/er/ir endings from the infinitive and adding the appropriate endings depending on the subject of the sentence (I, you,...

When a question asks us to solve an equation, it is asking us to find the value of x. We need to rearrange so that x is on one side of the equals sign, and everything else is on the other. First, we need ...

Market structures are models used by economists to represent the conditions of the market of particular goods. The answer to the question lies in one of the assumption to be made in the model of perfect c...

The SAN (pacemaker) sends a wave of excitation across both atria. This triggers atrial systole, where both atria contract simultaneously. There is a time delay at the AV Node which al...