Cell Signalling and Transduction
In vasodilation, proper nerve signals sent to blood vessels cause

the release of nitric oxide from endothelial cells
All of these
reduced blood pressure
relaxation of smooth muscle cells

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Cell Signalling and Transduction
In terms of cell communication, what do bacterial pathogens such as cholera and anthrax have in common?

They alter the chemical structure of key signaling molecules
They destroy the receptors for key signaling molecules
They prevent the production of key signaling molecules
They block the normal functioning of signal transduction mechanisms

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Cell Signalling and Transduction
Cell signaling can be classified into

three distinct types based on the distance over which the signaling molecules act
two distinct types based on the distance over which the signaling molecules act
three distinct types based on the signaling molecules
None of these

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