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Understanding Cellular Transport Processes in Biology

Learn about passive and active transport mechanisms in cells. Passive transport moves substances from high to low concentration without using energy, while active transport uses energy to go against the concentration gradient. Discover diffusion, osmosis, facilitated diffusion, protein pumps, endocytosis, exocytosis, and different types of membrane proteins involved in cellular transport.

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Understanding Cellular Transport Processes in Biology

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  1. Passive Transport No energy is used [High]  [Low] (it’s the natural flow) This means it goes down a concentration gradient

  2. What are the three types of passive transport? 1. Diffusion 2. Osmosis 3. Facilitated Diffusion

  3. [High] [Low] Diffusion

  4. Osmosis

  5. CH2OH OH + Facilitated Diffusion

  6. Active Transport Energy is used [Low]  [High] This means it goes up or against a concentration gradient

  7. What are the three types of active transport? 1. Protein pumps 2. Endocytosis 3. Exocytosis

  8. Protein Pumps Protein Pumps:proteins use energy to pull or pump materials into or out of the cell to stockpile or store substances the cell needs

  9. Different Types of Membrane Proteins (page 126) SIGNAL/ RECOGNITION TRANSPORTERS RECEPTORS ENZYMES

  10. Different Types of Membrane Proteins (page 126) signal/recognition 2. Enzymes 3. receptor 4. transporter 5.

  11. When a particle is engulfed into the cell. 2 types Phagocytosis: When a cell wraps part of its membrane arounda large particle forming a “pocket” or vesicle Pinocytosis: The same process, but with smaller particles or liquids Endocytosis

  12. A vesicle carrying a substance fuses with the cell membrane and releases the substance Exocytosis

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