Molecules that bind to a receptor and trigger signaling pathways are called                           Group of answer choicesagonistsantagonistsIRE-binding proteinspromotersligands

The molecules that bind to receptors in a signalling pathway to initiate a signal are called:Group of answer choicesSecond messengersTranscription factorsSubstratesLigands

How does ligand binding to membrane receptors regulate transcription?Group of answer choicesAcetylationadenylationdeacylationphosphorylationguanylation

The secretion of a signal molecule by a cell into the local environment, followed by a response by a number of cells in the immediate vicinity, is an example ofGroup of answer choiceshormonal signalingparacrine signalingendocrine signalingsynaptic signaling

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

What are proteins that act in a coordinated manner with hormone receptors to mediate gene expression?    Group of answer choicescoreceptorscohormones coactivatorsreceptor-transcription mediatorscotranscription factors