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Water moves from the roots to the leaves through tissue called the xylem, in a process called transpiration. As water evaporates out of the leaf, more water is 'pulled upwards' to replace what has been lost.

The enzyme maltose will always fold into in a tertiary structure, which results in the active site being in a specific shape that only the substrate maltase can bind to. This is often illustrated using the a...

The subjunctive is notoriously difficult to master but its use does tend to follow particular rules. At this level it is important to know and have a good understanding of the folloiwing conditions which req...

Na has more electron shells/ energy levels than Li. This means that Na has a greater atomic radius than Li. Therefore, the outer shell electron in Na experiences a weaker nuclear attraction than in Li. Less ...

Oxbridge interviewers want to see how you think. One tip is to think out loud, explain your thought process- if you don't get the answer right, it might not matter. It's about how you got to it. They also wa...