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Across 4. A more complex cell that contains a nucleus 7. A membrane protien that is perminantly attached to the biological membrane 9. Can range from high to low and can either increase activity or slow down activity in a cell 10. The scientific model used to describe the structural features of biological membranes 13. Lipids with carbohydrates attached 14. The diffusion of water from dilute to concentrated 15. Is made up of two layers of phospolipids with embedded protiens

Down 1. A much more simple type of cell that does not have a nucleus 2. Are present in the biylayer of the cell membrane. contols cell fluidity 3. Something that repels or fails to mix with water 5. A substance that reacts specifically with an antibody 6. One part is hydrophobic and the other is hydroplilic 7. A network of cells, tissues, and organs that work together to defend the body 8. Involved in facilitated diffusion and active transport of substances in and out of a cell 11. An organelle that contains dijestive enzymes 12. protiens that are present in the cell for cell signaling