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Cell Transport Vocabulary Chapter 7, Section 3

Explore cell transport mechanisms like diffusion, osmosis, facilitated diffusion, and active transport. Learn about cell boundaries, membrane functions, and the role of cell walls in providing support. Understand isotonic, hypertonic, and hypotonic solutions.

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Cell Transport Vocabulary Chapter 7, Section 3

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  1. Cell Transport VocabularyChapter 7, Section 3 • Solution • Solute • Concentration • Diffusion • Equilibrium • Osmosis • Isotonic • Hypertonic • Hypotonic • Osmotic pressure • Protein channels • Facilitated diffusion • Active transport • Endocytosis • Phagocytosis • Pinocytosis • Exocytosis

  2. Animal Cell Colors • A: Orange • B. Orange • C. Yellow • D. Black • E. Gray • F. none • G: Red • H: Light blue • I: Brown • J: Pink • K: Blue • L: Green • M: Pink • N: Black • O: Green • P: Purple • Q: none

  3. Plant cell coloring: • A: light green K: yellow • B: dark green L: red • C: yellow M: brown • D,D1: light blue N: black • E: dark blue O: pink • F. green P: blue • G: gray Q: none • H: orange R: light purple • I: red S: dark purple • J: black

  4. Cell Boundaries Chapter 7 – Section 3

  5. Cell Membrane • Found in all cells • 2 jobs • Shows selective permeability by deciding what can enter/leave cell • Provides protection and support

  6. Composition • Lipid bilayer • Protein channels are embedded in lipid bilayer; allow large particles to move in/out of cell

  7. Cell Wall • Found in all plants, bacteria, fungi and some protists • Job is to provide support and protection for cell

  8. Composition • Plant cell wall is made of cellulose • Fungus cell wall is made of chitin • Some protists have one made of cellulose • Some bacteria have one made of peptidoglycan

  9. Diffusion • particles move from high concentration to low concentration • Does NOT require energy – passive transport • Movement continues until equilibrium is reached (p. 184 – figure 7-14)

  10. Osmosis • Movement of WATER across cell membrane • Cell membrane is selectively permeable – it allows certain materials in/out

  11. Types of Solutions • Isotonic – concentration of water and solute is same on both sides of membrane; equilibrium has been reached • Hypertonic – more water inside cell than out; water will leave cell, trying to dilute the solution on outside. Cell will shrink/die

  12. Hypotonic – more water outside cell than in; water will enter cell, trying to dilute the solution. Cell will swell and possibly burst

  13. Plasmolysis • Occurs in plant cells when large vacuole loses water • Plant wilts due to loss of turgor pressure • Intake of water refills vacuole

  14. Facilitated Diffusion • Facilitate – Means “to help” • molecules (like glucose) are too large to diffuse across membrane • Use PROTEIN CHANNELSin lipid bilayer to move in/out • Still passive transport, no energy required • P. 187- figure 7-17

  15. Active Transport • Energy IS required for large molecules to move in • Moving from low to high concentration • Against the concentration gradient • 2 types

  16. Endocytosis • – cell engulfs substance; forms vacuole around it; can be either by: • Phagocytosis – take food into the cell • Pinocytosis – take in water

  17. Exocytosis

  18. IAN pages 13, 14, and 15 (page 186 in textbook) • PAGE 13 TITLE: Isotonic • Define, draw animal and plant cell • PAGE 14 TITLE: Hypertonic • Define, draw animal and plant cell • PAGE 15 TITLE: Hypotonic • Define, draw animal and plant cell

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