Cell Membrane and Transport
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-LS1-2Develop and use a model to illustratethe hierarchical
organizationof interacting systemsthat provide specific functions within
multicellular organisms
HS-LS1-3Plan and conduct an investigation to provide evidence
thatfeedback mechanismsmaintain homeostasis.
