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11 December, 12:55

17. Which of the following statements are accurate?

A. Neurotransmitters can act as ligands.

B. Acetylcholine is a neurotransmitter. It can bind to an acetylcholine receptor on the surface of a cell. If this receptor is also a sodium channel, we would call acteylcholine a ligand and its receptor a ligand gated receptor.

C. Neurotransmitters can act as chemical signals between two neurons.

D. Diffusion is a type of passive transport and does not require energy. Sodium channels are an example of a membrane bound protein that allows diffusion of sodium within requiring energy (ATP).

E. Ion pumps do not require energy (e. g. ATP) in order to move molecules across the membrane.

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  1. 11 December, 13:40
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    A. Neurotransmitters can act as ligands.

    B. Acetylcholine is a neurotransmitter. It can bind to an acetylcholine receptor on the surface of a cell. If this receptor is also a sodium channel, we would call acteylcholine a ligand and its receptor a ligand gated receptor.

    Explanation:

    Answer:

    A. Neurotransmitters can act as ligands.

    B. Acetylcholine is a neurotransmitter. It can bind to an acetylcholine receptor on the surface of a cell. If this receptor is also a sodium channel, we would call acteylcholine a ligand and its receptor a ligand gated receptor.

    Explanation:

    Neurotransmitter are chemicals that transfer signals between neurons and nerve cells. They control some physical and physiologocal activity such as appetite, food.

    Acetycoline is an example of neurotransmitter and it is located in the parasympathetic nervous system. Ligand are substance that form complexes with biomolecule. They serve biological purpose with this biomolecule.

    This ligand binds to target site. Neurotransmitter act as ligand by binding to receptor in the postsynaptic neuron and acetycoline a type of neurotransmitter can also serve as ligand they bind to acetycoline receptor on cell surface.
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