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Okay, so let's get back to basics. What is an enzyme? An enzyme is a biological catalyst that speeds up chemical reactions. How does it do this? All enzymes have active sites, which is where certain molec...
The resting membrane potential inside the neurone (-70mV) is negative relative the outside! This means that even though there are both Na+ ...
Translation is the conversion of the messenger RNA (mRNA) code into a protein. Cytoplasmic mRNA is bound by ribosomes (which are present in the cytoplasm or rough endoplasmic reticulum). Transfer RNA (tRN...
Action potentials are how nerve impulses travel along nerve cells/neurones. At rest a neurone has a membrane potential of -70mV which is maintained by the action of sodium potassium pumps in the plasma me...
i. How does antibiotic resistance arise? antibiotic resistance = bacteria that cannot be treated with antibiotics resistance arises when bacterial genes mutate (=a change in base s...
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