quito
Uploaded by
21 SLIDES
383 VUES
210LIKES

Key Differences Between Plant and Animal Cells: Membrane Transport and Function

DESCRIPTION

This overview explores the major differences between plant and animal cells, focusing on cellular structures and transport mechanisms. Under a microscope, plant cells can be identified by their cell walls, which provide additional protection and support, while animal cells lack this feature. The description also covers membrane transport, emphasizing passive methods like diffusion and osmosis, and active transport mechanisms involving energy. It highlights the roles of various organelles and the selectively permeable nature of cell membranes in regulating substance movement.

1 / 21

Télécharger la présentation

Key Differences Between Plant and Animal Cells: Membrane Transport and Function

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

Playing audio...

  1. Bell Ringer • What are the major differences between plant and animal cells? • When looking under a microscope, you cannot see the organelles of the cell. How can you distinguish between a plant and animal cell under a microscope? • What is the major function of cells that most organelles are involved in?

  2. CellMembrane • Lipid Bilayer • Protection for the cell • Controls movement of substances into and out of the cell • Selectively permeable • Allows some molecules to pass through but not others

  3. CellMembrane http://newberrybiology.wordpress.com/2011/02/09/hydrophobia/

  4. Cell Wall • Found in plants, fungi, and many bacteria • Surrounds cell membrane to provide extra support and protection • Made of cellulose (tough carbohydrate)

  5. Membrane Transport SPI 3210.1.7 Predict the movement of water and other molecules across selectively permeable membranes. Essential Question: What are the types of passive transport and how do they differ from active transport?

  6. Diffusion • Movement of particles from an area of high concentration to low concentration. • Concentration gradient • No energy required • Passive transport http://www.visualphotos.com/image/1x7465687/food-coloring_dispersed_in_water_illustrating

  7. Diffusion • Particles will continue to move until reaching equilibrium. • Factors that affect the rate of diffusion: • Concentration, temperature, pressure, size and charge of the substance.

  8. Facilitated Diffusion • Diffusion across cellmembrane • Channel proteins • Carrier proteins • Passive transport • No energy needed

  9. http://sitimardianayaakob.blogspot.com/2010/05/membrane-structure-n-passive-transport.htmlhttp://sitimardianayaakob.blogspot.com/2010/05/membrane-structure-n-passive-transport.html

  10. Osmosis • Osmosis is the diffusion of water. • Water molecules move to the area with higher concentration of solute(sugar in the picture). http://bio1151.nicerweb.com/Locked/media/ch07/osmosis.html

  11. Osmosis • Isotonic solution • Same concentration of water and solute http://anaptechno.blogspot.com/2011/04/cell-membrane-structure-and-function.html

  12. Osmosis • Hypertonic solution • Solute concentration greater outside the cell. • Water movesout causing cell to shrink. http://www.innovateus.net/content/when-are-hypertonic-solutions-used

  13. Osmosis • Hypotonic solution • More solute inside the cell. • Water will move into the cell. http://spmbiology403.blogspot.com/2008/08/types-of-solution-hypotonic.html

  14. http://josuertechno.blogspot.com/2011/04/cell-membrane.html

  15. Active Transport • When substances move against the concentration gradient. • Low to High • Requires carrier proteins and energy (ATP) • also called pumps

  16. Active Transport • Sodium-Potassium pump • uses ATP to pump three sodium ions out while bringing two potassium ions in.

  17. Endocytosis • The cell surrounds a substance on the outside. • “pulls” the substance into the cell. • Requires energy http://sjcabiology.wikispaces.com/Endocytosis

  18. Exocytosis • Removalof materials from the cell • Uses vesicles • Requires energy http://teachernotes.paramus.k12.nj.us/nolan/cp%20bio.htm

  19. Bell Ringer • In the egg experiment, what do you think will happen to the egg placed in corn syrup? • Could it be dangerous to drink too much water? Explain your answer. • In a hypotonic environment, animal cells will swell and often burst. Plant cells will swell, but won’t burst. What cellular structure keeps plant cells from bursting?

More Related