Plasma membrane 0.0 / 5 ? BiologyBiological moleculesASOCR Created by: Twice_OnceCreated on: 16-05-21 11:07 82103546179 Across 1. Double bond (11) 4. Difference in electrical charges in the molecule (5) 5. Attracts water (11) 7. Down a concentration gradient (9) 9. No opposite charges in the molecule (3, 5) Down 2. Act as receptors and cell markers for recognition sites (12) 3. Up a concentration gradient (6, 9) 6. Polymers of amino acid (7) 8. Bonds in proteins (7, 4) 10. Does not require energy (7, 7)
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