Exploring Cell Signaling Pathways
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Objective
I can describe the main steps of cell signaling pathways.
Part 1 of 4
Warm-up video
Osmosis from Elsevier · 9:41Vetted channel
We don't generate video — this one is by Osmosis from Elsevier on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
Autocrine signals affect the same cell that produces them, while paracrine signals affect nearby cells, and endocrine signals affect distant cells.
- 2
Hydrophobic ligands can diffuse across the cell membrane and bind to receptors inside the cell, whereas hydrophilic ligands bind to transmembrane receptors on the cell surface.
- 3
The three main classes of transmembrane receptors are G protein-coupled receptors, enzyme-coupled receptors, and ion channel receptors.
Part 3 of 4
Practice
8 questions
What is the primary difference between paracrine and endocrine signaling?
Explain why hydrophobic signaling molecules require carrier proteins in the extracellular space.
Part 4 of 4
Exit ticket
Quick comprehension check
“Describe the three main stages of a cell signaling pathway, including what happens in each stage.”
Sample answer included in the free materials
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