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DNA helicase acts to unwind the 2 strands of DNA by breaking the Hydrogen bonds between them. This means that free nucleotide bases can be attracted and bind to the exposed bases.
AdvantagesAny two from:. Can reproduce quicker and in much larger quantities than sexual reproduction. No competition for mates. No need for motility DisadvantagesAny two from:. No variation, . So more vu...
action potential depolarises the synaptic terminal this activates the voltage gated calcium channels Calcium ions diffuses into the cell down the electrical gradient Calcium ions stimulate the release of ...
The cell membrane, also known as plasma membrane, you will know from GCSE is a feature of both animal and plant cells that helps contain cellular contents and control entry and exit of substances from the...
Bacteria have a singular, large, circular chromosome and can have many smaller circular DNA-containing structures called plasmids. Bacterial cells that are in close proximity can form a connective bridge,...
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