BIO1140 Study Group #2 Answer Key

BIO1140 Study Group #2 Answer Key - BIO1140 Study Group#2...

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BIO1140 Study Group #2 Answer Key 1. Name the fve Functions oF the cell membrane. 1. Defne boundaries; selectively permeable barrier 2. Localisation and organisation ScaFFold For biochemical activities (enzymes) e.g. mitochondria 3. Regulation oF solute transport In and out oF cell and/or organelles Uphill or downhill e.g. Na + ,K + -ATPase 4. Responses to external signals Receptors and signal transduction e.g. ß-adrenoreceptor 5. Cell-to-cell communication Recognition, adhesion, exchange oF materials Gap junctions, plasmodesmata 2. Describe what is meant by the “±luid Mosaic Model”, and why this is applicable to the cell membrane. ±luid mosaic model: - Lipid-protein assembly in which components are held together in a thin sheet by non-covalent bonds - Two ²uid lipid layers – structural backbone, permeability barrier - Mosaic oF proteins – unique complement responsible For specifc Functions 3. What are some oF the key components oF the “unit membrane” (Gorter and Grendel,
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This note was uploaded on 03/30/2012 for the course SCIENCE BIO1140 taught by Professor Fenwick during the Spring '09 term at University of Ottawa.

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BIO1140 Study Group #2 Answer Key - BIO1140 Study Group#2...

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