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.

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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 evidence that feedback mechanisms maintain homeostasis.

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