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It allows some things to pass through while other materials cannot

Published byShona Parrish Modified over 6 years ago

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Presentation on theme: "It allows some things to pass through while other materials cannot"— Presentation transcript:

1 It allows some things to pass through while other materials cannot
Mind Stretcher 11/28/16 The cell membrane is known to be “selectively permeable.” What does that mean? It allows some things to pass through while other materials cannot

2 “Selectively Permeable” Membranes
“Semi-Permeable” or “Selectively Permeable” Membranes A semi-permeable membrane will allow certain molecules to pass through it, but not others. Partially permeable membrane Generally, small particles can pass through… …but large particles cannot

3 Free water molecules diffuse in this direction
Partially-permeable membrane More free water molecules on this side of membrane Water-solute particle is too large to pass through membrane Free water molecules diffuse in this direction

4 Cell Poster Review for Test
Step 1: Label the number of each cell organelle in the diagram (I suggest also writing the name of each one next to it too!) Step 2: Use the WHITE sheet on your talbe and copy the correct FUNCTION for each cell organelle in the tables below the diagrams Step 3: Complete the labeling and chart on the back for the BACTERIA cell

5 Prokaryote Diagram Word Bank
Cell Membrane Cilia Cytoplasm Flagella Nucleoid Region Ribosome Cell Wall

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