Top answers

What is two's complement, and how do I calculate it?

Two's complement is one way negative numbers can be represented in Binary. In Decimal notation, we use a + or - sign to indicate whether it is a postive or negative number respectivly. Two's complement is a ...
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Answered by Tim H. • Computing tutor
11939 Views

How are 'etre' verbs conjugated differently in the passé composé?

As with AVOIR, the passé composé requires an auxillary and a past participle. However, with 'etre' verbs, aside from the obvious change in auxillary, there are irregularities in the passé composé, and we mus...
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Answered by Jasmine T. • French tutor
3606 Views

How do I answer the unseen poetry section of my exam?

This can be tricky in timed conditions, but with practice this should be okay! A few top tips to follow include: Use connectives. This is simple to remember, and encourages you to delve as deep into your ana...
FQ
6575 Views

What is the differences and simalarities between diffusion and osmosis?

Diffusion may be simple, whereby solutes travel through the phospholipids in the cell membrane as they have the same polarity as a lipid or are small enough to do so.Or, diffusion is faciliated and this is w...
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Answered by Eloise L. • Biology tutor
6774 Views

Explain the exchange of oxygen between an alveolus and a capillary.

The blood in the capillary has just returned to the lungs from the rest of the body, so contains a low concentration of oxygen. The alveolus contains air that has just been breathed in by ventilation, so it ...
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Answered by Anastasia D. • Biology tutor
3790 Views