How do paracrine signalling factors usually act on a cell?

Choose the CORRECT option below:

Question

How do paracrine signalling factors usually act on a cell? 
   
 Choose the  CORRECT  option below:

Accepted Answer

Bind to a receptor that is coupled to an enzyme

Answer

Bind to an intracellular receptor which regulates gene transcription

Answer

Cause the opening of ion channels

Answer

Cause apoptosis in the target cells

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