Cell Answer Sheet

Cell Answer Sheet - Cell Answer Sheet 1) How many...

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Cell Answer Sheet 1) How many phospholipid layers do membranes have? 2 2) What part of the membrane is hydrophilic? GLYCEROL HEADS hydrophobic? FATTY ACID TAILS 3) The glycerol heads face OUTWARD. The fatty acid tails face INWARD. 4) What are the jobs of proteins found in cell membranes? CHEMICAL TRANSPORT; COMMUNICATION; ENERGY TRANSFER; INDENTITY MARKERS 5) What is diffusion? THE MOVEMENT OF PARTICLES FROM A HIGHER CONCENTRATION TO A LOWER CONCENTRATION ACROSS A CELL MEMBRANE 6) Osmosis? THE MOVEMENT OF WATER ACROSS A SELECTIVELY PERMEABLE MEMBRANE FROM HIGH TO LOW CONCENTRATION 7) Where does facilitated diffusion occur? AT SPECIAL PROTEINS 8) Define hypertonic, hypotonic and isotonic. HYPERTONIC- MEANS MORE SOLUTES HYPOTONIC MEANS LESS SOLUTES ISOTONIC MEANS SAME AMOUNT OF SOLUTES 9) A cell is 80% water and 20% solutes. If placed in an environment of 70% water and 30% solutes. a) What term applies to the outside environment? HYPERTONIC b) Which way is the water going to move? Out of the cell
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Cell Answer Sheet - Cell Answer Sheet 1) How many...

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