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OCR Biology A2 Glossary
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- 1alpha cellsCells in the islets of Langerhans that release glucagon in response to low blood glucose levels.
- 2AcetylcholineA neurotransmitter (transmitter substance) found in cholinergic synapses.
- 3AcetylcholinesteraseAn enzyme in the synaptic cleft that breaks down the transmitter substance acetylcholine.
- 4ActinA protein found in muscle cells. It is the main component of the thin filaments.
- 5Action potentialA brief reversal of the resting potential across the cell surface membrane of a neurone. All action potentials have a value 0f +40mV.
- 6Adenyl cyclaseThe enzyme found inside cells, associated with hormone receptors, that converts ATP to cAMP.
- 7AfferentIncoming or leaning towards
- 8AlleleAn alternative version of a gene.
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- Fichas sobre OCR Biology A2 Glossary , creado por ChloeSutcliffe el 03/02/2015.
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- ChloeSutcliffe
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