COMPREHENSIVE STUDY GUIDE & REVISION NOTES (2026)
Module 4.1 (How Cells Receive Signals)
Objective
Describe the types of signaling molecules that coordinate the functions of
cells.
Module 4: How Cells Communicate 1
, Hormone
a signaling molecule that circulates through the blood or a similar fluid
Module 4: How Cells Communicate 2
,Module 4: How Cells Communicate 3
, Module 4: How Cells Communicate 4