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AMOEBA SISTERS PRACTICE TEST ON CELL MEMBRANE AND CELL TRANSPORT, Exams of Biochemistry

Cell Membrane and Transport worksheet This reinforcement worksheet displays a graphic of the cell membrane showing the phospholipid bilayer and embedded proteins. Students identify structures within the bilayer and use reasoning to determine how molecules are moving across the membrane in response to a hypertonic solution. Worksheet was designed for freshman level biology classes who are studying osmosis and diffusion. Students should be able to recognize that water is leaving the cell because it is placed in a hypertonic solution. Glucose is shown moving into the cell through a protein channel, a process known as facilitated diffusion. Oxygen and water move across the phospholipid bilayer from areas of high concentration to areas of low concentration. HS-LS1-2 Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms HS-LS1-3 Plan and conduct an investigation to provide eviden

Typology: Exams

2023/2024

Available from 03/26/2024

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AMOEBA SISTERS: VIDEO RECAP CELL TRANSPORT
Amoeba Sisters Video Recap: Cell Transport
The cell membrane is
important for
maintaining
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.
2. What is simple diffusion?
____________________________________________________
____________________________________________________
____________________________________________________
____________________________________________________
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
4. “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
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. ___________________________________________
________________________________________________________________________________________________________
_
________________________________________________________________________________________________________
_
7. Give a scenario where a cell may need to perform a form of exocytosis. ____________________________________________
________________________________________________________________________________________________________
_
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AMOEBA SISTERS: VIDEO RECAP CELL TRANSPORT

Amoeba Sisters Video Recap: Cell Transport

The cell membrane is important for maintaining 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.
    1. What is simple diffusion?




    1. 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

  1. “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

  1. Are endocytosis and exocytosis forms of passive or active transport? ______________________________________________
  2. Give a scenario where a cell may need to perform a form of endocytosis. ___________________________________________

_


_

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

_

________________________________________________________________________________________________________

_