Nothing Special   »   [go: up one dir, main page]
Scribd Logo
Upload

Welcome to Scribd!

  • 4K views

    Edited - Amoeba Sisters Cell Transport

    Uploaded by

    Talha 10
    The cell membrane controls what enters and exits the cell through passive and active transport. Simple diffusion is passive transport where molecules spread from high to low concentration areas. Endocytosis and exocytosis are forms of active transport where the cell transports large molecules into or out of the cell. Facilitated diffusion uses protein channels to transport molecules down their concentration gradient, while active transport uses protein pumps to move molecules against their gradient.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    Edited - Amoeba Sisters Cell Transport

    Uploaded by

    Talha 10
    4K views2 pages
    The cell membrane controls what enters and exits the cell through passive and active transport. Simple diffusion is passive transport where molecules spread from high to low concentration areas. Endocytosis and exocytosis are forms of active transport where the cell transports large molecules into or out of the cell. Facilitated diffusion uses protein channels to transport molecules down their concentration gradient, while active transport uses protein pumps to move molecules against their gradient.

    Original Description:

    Original Title

    Edited - Amoeba sisters cell transport

    Copyright

    © © All Rights Reserved

    Available Formats

    PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    The cell membrane controls what enters and exits the cell through passive and active transport. Simple diffusion is passive transport where molecules spread from high to low concentration areas. Endocytosis and exocytosis are forms of active transport where the cell transports large molecules into or out of the cell. Facilitated diffusion uses protein channels to transport molecules down their concentration gradient, while active transport uses protein pumps to move molecules against their gradient.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    4K views2 pages

    Edited - Amoeba Sisters Cell Transport

    Uploaded by

    Talha 10
    The cell membrane controls what enters and exits the cell through passive and active transport. Simple diffusion is passive transport where molecules spread from high to low concentration areas. Endocytosis and exocytosis are forms of active transport where the cell transports large molecules into or out of the cell. Facilitated diffusion uses protein channels to transport molecules down their concentration gradient, while active transport uses protein pumps to move molecules against their gradient.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 2

    AMOEBA SISTERS: VIDEO RECAP CELL TRANSPORT

    Amoeba Sisters Video Recap: Cell Transport


    The cell membrane is 2. What is simple diffusion?
    important for When molecules spread from an area of high to an area of low
    maintaining ____________________________________________________
    concentration.

    homeostasis, because it
    controls what enters ____________________________________________________
    and leaves a cell.
    ____________________________________________________

    1. Sketch the ____________________________________________________


    phospholipid bilayer of a cell membrane below and label the
    polar heads and nonpolar tails. 3. Circle the statements below that would be TRUE about
    simple diffusion. HINT: There is more than one!

    A) It is a form of passive transport.


    B) Molecules travel with the concentration gradient.
    C) It is how glucose travels across the cell membrane.
    D) It is how oxygen and carbon dioxide travel across the
    membrane.
    E) This transport is typical for large molecules.

    Moving with the Concentration Gradient


    . “Moving with the flow” (i.e. going with the concentration gradient) is
    the direction of flow in passive transport. Show this in the diagram on
    right by drawing in 10 total circles (to represent molecules). You must
    decide a certain amount to place on the left vs. the right side after
    viewing the arrow indicating the direction of movement. Label the high
    concentration side and low concentration side.

    Endocytosis and Exocytosis


    Active transport
    5. Are endocytosis and exocytosis forms of passive or active transport? ______________________________________________

    6. Give a scenario where a cell may need to perform a form of endocytosis. ___________________________________________
    When transporting large molecules

    _________________________________________________________________________________________________________

    _________________________________________________________________________________________________________

    7. Give a scenario where a cell may need to perform a form of exocytosis. ____________________________________________

    When releasing a very large molecule from the cell


    _________________________________________________________________________________________________________

    _________________________________________________________________________________________________________
    AMOEBA SISTERS: VIDEO RECAP CELL TRANSPORT

    Traveling Molecules

    For the following scenarios, determine whether the molecules in the scenario are moving by (S) simple
    diffusion, (F) facilitated diffusion, or (A) active transport.

    8. _____ For water to travel across the cell membrane at a substantial rate, the water molecules travel through protein channels
    known as aquaporins.

    9. _____ While water molecules are polar, they are also very small. One fact not mentioned in the video is that some water
    molecules are able to squeeze directly through the phospholipid bilayer due to their small size.

    10. ____ Charged ions are traveling through a cell membrane with the concentration gradient.

    11. ____Cells lining the gut need to take in glucose, but at a certain time, the concentration of extracellular glucose is lower than
    the concentration already stored in the cells.

    12. ____At a certain time, glucose is in a high concentration outside of a cell and needs to travel through the membrane into the
    cell.

    Facilitated Diffusion via a Protein Channel Active Transport via a Protein Channel
    For the below image, label the 13. polar area and 14. non- For the below image, label the 17. polar area, and 18. non-
    polar area on the diagram. polar area.

    Draw in 15. protein channel and 16. molecules that would Draw in 19. protein channel and 20. molecules that would
    represent a potential concentration gradient in facilitated represent a potential concentration gradient in active
    diffusion via a protein channel on the diagram. transport via a protein channel on the diagram.

    You might also like