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What is a first messenger hormone?

A first messenger is a hormone which binds to a receptor on the plasma membrane of a cell and causes a change to happen inside the cell
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Answered by Laura H. Biology tutor
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What is homeostasis?

Homeostasis is maintaining a constant internal environment. It works by using control systems and allows cells to function normally.
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Answered by Laura H. Biology tutor
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What is a transition metal?

A transition metal is an element that forms one or more stable ions with partially filled d-orbitals
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Answered by Laura H. Chemistry tutor
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How does a writer shape meaning/express their opinion though their literature?

A writer shapes meaning through utilising what they have to work with: words. Therefore, they use intricate methods such as metaphors and hyperboles in order to effectively create 2+ layers to the words on t...
Answered by English Literature tutor
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Explain how the resting potential of -70mV is maintained in a sensory neuron.

The resting potential is a result of the concentrations of the sodium and potassium ions inside the neuron compared to outside. The leaky channels in the sensory neuron membrane allow the movement of Na+ (so...
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Answered by Jessica M. Biology tutor
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