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What are the different ways in which substances can move across cell membranes?

Passive transport Diffusion = occurs in gases or aqueous solutions whereby particles are free to move and spread from a higher concentration to a lower concentration. An example is air freshener being spraye...
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Answered by Alisha R. • Biology tutor
7774 Views

How does energy move through a food chain?

In most food chains, all of the energy which is used originally comes from the sun. Plants are "photoautotrophs", which means that they can use light energy from the sun to fuel their life processe...
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Answered by Daniel M. • Biology tutor
36262 Views

When should i use 'desu' as opposed to 'masu' to end a sentence in Japanese?

'Desu' and 'Masu' are both terms which make a sentence sound more formal in Japanese. They both perform the same function, but cant be used interchangeably. The rule to remember is that 'Desu' is used after ...
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Answered by Yuka Q. • Japanese tutor
21328 Views

When do I have to use être and when do I have to use avoir with the perfect tense?

Être should be used with MRS VAN DER TRAMP verbs (Monter, Retourner, Sortir, Venir, Arriver, Naître, Descendre, Entrer, Rester, Tomber, Rentrer, Aller, Mourir, Partir) and any reflexive verbs (s'habiller, se...
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Answered by Selin B. • French tutor
3398 Views

Why did Hitler rise to power in 1933?

It would be easy to attribute Hitler's rise to power in 1933 to just one factor. However there are a lot of different elements which played an important role in Hitler's acquisition of power. Firstly, the co...
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Answered by Izzy J. • History tutor
3753 Views