Which of the following is the best definition of an allosteric modulator?Group of answer choicesA drug that binds to an intracellular receptor and modifies its sensitivity to its natural ligandA substance that competes for the ligand-binding site with the natural transmitter and thus acts as a potent antagonistA substance that binds to a receptor and inhibits its spontaneous (endogenous) activityA substance which binds to a receptor at a different site to the natural ligand but which affects the receptor’s response to it’s natural ligandA neurotransmitter that acts via several different receptors

A drug that binds to a receptor and produces a biological response that mimics the response to the endogenous ligand is known as* (A) Agonist (B) Antagonist (C) Functional antagonist (D) Partial agonist (E) Partial antagonist

An allosteric interaction between a ligand and a protein is one in which:Answers: A. two different ligands can bind to the same binding site.B. the binding of the ligand to the protein is covalentC. multiple molecules of the same ligand can bind to the same binding siteD. the binding of a molecule to a binding site affects the binding of an additional molecule to the same siteE. the binding of a molecule to a binding site affects the binding properties of another site on the protein.

The binding of a regulatory molecule to a protein at one site that affects the function of the protein at a different site.Group of answer choicesallosteric regulationcompetitive inhibitorcooperativityactive site

Choose the best option to complete the following: Sites 1 & 2 are where ________ bind; Site 3 is where a/an ________ binds; Site 4 is where __________ bind.You can respond oncesubstrates, allosteric inhibitor, allosteric activatorssubstrates, allosteric activator and/or inhibitor, allosteric activatorsallosteric inhibitors, allosteric activator, substratesallosteric activators and/or inhibitors, allosteric activator, substratesallosteric activators, substrate, allosteric inhibitorsallosteric activators, substrate, allosteric activators and/or inhibitors

An antagonist is a substance that:a.Binds to the receptors and initiates changes in cell function, producing submaximal effectb.Binds to the receptors and initiates changes in cell function, producing maximal effectc.Binds to the receptors without directly altering their functionsClear my choice