Rethink Biology
Rethink Biology makes complex biology easy through clear animated lessons.
Learn AP Biology, MCAT Biology/Biochemistry, A-Level Biology, IB Biology, and college molecular biology with visual explanations designed for exam success.
Topics include cell signaling, genetics, DNA replication, gene expression, biochemistry, biotechnology, cell biology, and molecular biology.
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Rethink Biology
AP Biology Revision Passive Transport
Watch the animation here: https://youtu.be/G4sRvurZr6A
1 month ago | [YT] | 8
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Rethink Biology
Why does NADH generally lead to more ATP production than FADH₂?
Watch the animation on Electron Transport Chain:
https://youtu.be/_r9Zqh5k3DU
1 month ago | [YT] | 0
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Rethink Biology
Which molecule accepts electrons from both Complex I and Complex II?
Watch the animation on Electron Transport Chain:
https://youtu.be/_r9Zqh5k3DU
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Rethink Biology
Which complexes pump protons across the inner mitochondrial membrane?
Watch the animation on Electron Transport Chain:
https://youtu.be/_r9Zqh5k3DU
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Rethink Biology
The current accepted P/O ratio (ATP produced per oxygen atom reduced) for NADH is approximately:
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Rethink Biology
Watch our latest video on Electron Transport Chain
https://youtu.be/_r9Zqh5k3DU
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Rethink Biology
Which highly toxic compound halts the ETC by irreversibly binding to Complex IV (Cytochrome c oxidase)?
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Rethink Biology
🌊 The "Fluid Mosaic" Breakdown 🧩
Struggling to visualize the plasma membrane for AP Biology Unit 2? Think of it less like a wall and more like a crowded, glowing dance floor. 💃✨
The Fluid Mosaic Model is a favorite for FRQs, so here is the "must-know" list for your revision:
• FLUID: The phospholipids and proteins aren't locked in place—they shift laterally! (Remember: Unsaturated tails = more fluid/kinks 🧬).
• MOSAIC: It’s a collage of phospholipids, integral proteins, cholesterol, and glycoproteins all working together.
• CHOLESTEROL: The "Goldilocks" molecule. It keeps the membrane from freezing in the cold and falling apart in the heat. 🌡️
• GLYCOPROTEINS: The "ID Tags" of the cell. Without these, your immune system wouldn't know who’s who!
💡 STUDY TIP: If you're drawing this for your notes, use vibrant colors to distinguish the hydrophobic tails from the hydrophilic heads. It makes the "Bilayer" logic stick much faster!
Which part of the membrane always trips you up? Let me know below! 👇
#APBiology #StemEducation #StudyGram #CellBiology #FluidMosaicModel
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Rethink Biology
Complex II of Electron Transport Chain is also an enzyme involved in which other metabolic pathway?
Attempt the full quiz on www.rethinkbiology.com/etc-quiz
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Rethink Biology
Give your feedbacks on our new video!
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