Membrane Transport
Mia Gonzalez
6 min read
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Study Guide Overview
This study guide covers membrane transport in cells, focusing on passive transport (simple and facilitated diffusion, including osmosis) and active transport (including bulk transport via endocytosis and exocytosis). It details the direction of transport relative to concentration gradients, energy requirements, and uses of transport proteins. Examples of each transport type are provided, along with practice questions and exam tips.
#🧬 Membrane Transport: Your Night-Before-the-Exam Guide 🚀
Hey there, future AP Bio superstar! Let's make sure you're feeling awesome about membrane transport. This is a big topic, but we've got this! 💪
#🚦 Overview of Membrane Transport
Membrane transport is all about how substances move in and out of cells. It's crucial for maintaining cell function and homeostasis.
Here's a quick look at the different types:
- Passive Transport: No energy needed (moves with the concentration gradient)
- Active Transport: Requires energy (moves against the concentration gradient)
#🚶 Passive Transport: Going with the Flow
#Simple Diffusion
- Movement of substances from an area of high concentration to an area of low concentration.
- No energy required! Think of it like a ball rolling downhill. 🏞️
- Occurs directly across the membrane.
- Example: Oxygen and carbon dioxide moving across the cell membrane.
#Facilitated Diffusion
- Movement of substances from an area of high concentration to an area of low concentration, but with the help of a transport protein.
- No energy required
- Used by polar molecules and ions that can't c...
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