The molecules that bind to receptors in a signalling pathway to initiate a signal are called:Group of answer choicesTranscription factorsSecond messengersLigandsSubstrates

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

A receptor that is stimulated by the binding of a chemical substance is called a

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

What is the name of the messenger molecule that participates in endocrine communication?Group of answer choicesNeurotransmitterHormoneNeurohormoneGap junction

Proteins called ______ are chemical signals that bind to receptors on a cell membrane and trigger cell division.Multiple choice question.cyclinskinetochoreskinesinsgrowth factors