Cellular Conversations: How Cells Communicate

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Cellular Conversations: How Cells Communicate

Learning objective

Learning Objective

At the end of the lesson, you will understand how cells communicate, including signaling types, receptors, and signal transduction.

What do you already know about cell communication?

Why Cells Communicate

Cells communicate to coordinate actions, respond to stimuli, and maintain homeostasis.

Types of Cell Signaling

Cell signaling includes autocrine, paracrine, endocrine, and direct signaling.

Autocrine Signaling

Cells release signals that bind to receptors on their own surface.

Paracrine Signaling

Signals are released to affect nearby cells, such as neurotransmitters.

Endocrine Signaling

Hormones travel through the bloodstream to distant target cells.

Direct Signaling

Cells communicate through direct contact, like gap junctions.

Receptors and Ligands

Receptors bind ligands to initiate a cellular response.

Signal Transduction Pathways

Convert an external signal to a functional change within the cell.

G-Protein Coupled Receptors

Involved in many signal transduction processes, using G-proteins.

Cellular Response

Responses can include gene expression, metabolism changes, or apoptosis.

Review and Questions

Summarize key points and answer any questions.

Write down 3 things you learned in this lesson.

Write down 2 things you want to know more about.

Ask 1 question about something you haven't quite understood yet.