Biology: Cell Membrane Structure
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Biology: Cell Membrane Structure
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What crosses the line?
Kicking off with a real-world nerve-agent assassination, this episode takes a closer look at the cell membrane—the thin, dynamic boundary that keeps a cell intact without shutting it off from the world.
We explore how phospholipids, cholesterol, and proteins work together to create a structure that's both flexible and remarkably resilient.
Hosted by Michael McNeil.
Cover art: “Transfer RNA and Gag Protein, 2021” by David S. Goodsell, Scripps Research and RCSB Protein Data Bank. doi: 10.2210/rcsb_pdb/goodsell-gallery-037
Follow Curiosity on Instagram (www.instagram.com/newwaytowonder) and YouTube (youtube.com/@curiosityeducation), and share your thoughts and burning science questions with our host by emailing contact@mdmcneil.com.
0:00 - Introduction
3:52 - Where Does the Cell Begin?
8:06 - A Boundary Under Pressure
14:51 - Phospholipids and the Bilayer
21:00 - Cholesterol and Membrane Fluidity
26:22 - Adapting to Heat and Cold
35:51 - Membrane Proteins
41:45 - The Fluid Mosaic