Defines the situation when all receptor binding sites are occupied by a messenger

Which is a correct explanation of an aspect within G protein signaling pathway? ATP powers the G protein to cause it to move and activate an enzyme O GTP activates the G protein causing it to move to activate the next protein O The receptor is active when bound to GTP GTP causes the G protein to activate and bind to the receptor

Describe the action of neurotransmitters at channellinked and G protein–linked receptors.

what is a receptor and give one example of where a receptor is found, explaining its role is in monitoring homeostasis

Mr PL was administered Drug A that acts on a particular receptor. Unfortunately, it was given in overdose and produced an adverse effect. Drug B is then administered which blocks that receptor. The effect of drug B results in a reduction in the effect of drug A. Comment on if Drug B is acting competitively (reversibly) or non-competitively (irreversibly)? Provide one suitable clinically relevant example of such interaction.

Describe the biochemical signaling steps by which activation of the NMDA receptor causes the postsynaptic cell to fire larger EPSPs.

Briefly describe what is signal amplification process using cAMP as the second messenger for example

Describe the signal transduction pathway that lipid-soluble messengers use.

List several roles of membrane receptors and that of G protein–linked receptors.

Of membrane-bound receptors and nuclear receptors, which is betteradapted for mediating a response that lasts a considerable length oftime, and which is better for mediating a response with a rapid onset andshort duration? Explain why.