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What is osmosis and how does it differ from what I learned at GCSE about diffusion

At GCSE osmosis was simplified to just diffusion of water so it is the spreading out of water molecules from where there is a high concentration to a low concentration- but in fact osmosis depends both on th...
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Answered by Katie G. • Biology tutor
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What are the 5 stages of the Medical school Application?

Volunteering Work experience UKCAT/BMAT Personal Statement (UCAS) Interview Preparation (each is an extensive subject in itself but above provides a skeleton overview of whats ahead if you are about to start...
OW
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Explain how the DNA of a Eukaryote is replicated

To replicate the DNA of a eukaryotic cell, the double helix structure must first be unwound to present the base pair sequence. This is done using DNA helicase (this enzyme breaks the hydrogen bonds connectio...
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Answered by Oscar W. • Biology tutor
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What is ionic bonding? Give an example

A bond formed between a metal atom and a non-metal atom in which electrons are transferred from the metal atom to the non-metal atom, forming ions. If an atom loses an electron, it becomes positively charged...
SA
Answered by Safia A. • Chemistry tutor
3164 Views

What is the overall charge of the nucleus of an atom, and why?

Positive. The neutrons found in the nucleus have a neutral charge, however the protons are positively charged. Therefore the overall charge is positive.
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Answered by Safia A. • Chemistry tutor
58901 Views