Day 3_ Types of Transport Notes PDF
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Uploaded by EnticingErhu2610
Fairfax County Public Schools
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Summary
This document provides notes on various types of cellular transport mechanisms, including diffusion, osmosis, and active transport, as well as an introduction to ATP. It also includes examples and diagrams to aid in understanding these biological processes.
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Types of Transport Time to “go with the flow” Types of Transport: Diffusion/Passive Transport Definition Movement from high to low concentration until it reaches equilibrium. Direction of movement High to Low (WITH the concentration...
Types of Transport Time to “go with the flow” Types of Transport: Diffusion/Passive Transport Definition Movement from high to low concentration until it reaches equilibrium. Direction of movement High to Low (WITH the concentration gradient) Requires ATP (energy)? No Picture Examples Diffusion, Facilitated diffusion, Osmosis Draw an arrow in this diagram Types of Transport: Active Transport Definition Movement of molecules from low to high concentration. Requires energy! Direction of movement Low to High Concentration (AGAINST the concentration gradient) Requires ATP (energy)? YES Picture Examples Endocytosis, Exocytosis, Protein pump Draw an arrow in this diagram Important vocabulary ⦿ Concentration: the amount of something. Important vocabulary ▪Concentration gradient: the difference in the amount of a substance in two different areas (from high to low concentration). Important vocabulary ⦿ Equilibrium: when the concentration of a substance is equal throughout a space. Not at At equilibrium equilibrium 3 Types of Passive Transport ⦿ Diffusion ⦿ Osmosis (water) ⦿ Facilitated Diffusion (through a membrane protein) Types of passive transport 1. Simple Diffusion Movement of a solute from high to low concentration until it reaches equilibrium. The cell does not need to use energy…it just happens! Diffusion/ passive transport ⦿Example: Spraying cologne inside ⦿Example: Opening a stinky trash can ⦿Video (food coloring) Types of passive transport 2. Facilitated Diffusion: molecules move from high to low concentration but they must use a protein to cross plasma membrane Facilitat e means “to help” Types of passive transport 3. Osmosis: movement of water molecules from high to low water concentration Only water moves! Introduction to ATP ⦿ Our bodies store energy as fat (for long term storage) and glycogen (a carbohydrate). ⦿ Most stored energy in our bodies is NOT immediately available to cells. ⦿ What is ATP? The cell’s energy molecule. Active Transport needs Energy! ⦿ ATP = Adenosine Tri Phosphate ⦿ How many phosphate groups are in 1 ATP molecule? 3 hink Where is the ”? TTP “A energy in ATP See gy r stored?Energy Ene stored here in the Where is bond between the ATP made? phosphates…when the 3 phosphate rd The pops off…energy is mitochondri released! a! Types of Active Transport ⦿Endocytosis: Brings large particles inside the cell. Ex: proteins and sugars or starches Types of Active Transport ⦿ Exocytosis: Takes waste (large particles) out of the cell. Ex: Waste products, CO2 Protein pump: ⦿ When a protein moves particles from low to high concentration using ATP To Recap:
