Proteins 0.0 / 5 ? BiologyBiological moleculesASOCR Created by: Joey McAleeseCreated on: 03-10-13 17:23 24135 Across 1. Movement of substances across the membranes again their concentration gradient, requiring the use of energy in the from of ATP (6, 9) 4. Associating with water molecules easily (12) Down 2. Water-repelling (11) 3. A protein molecule that acts as a biological catalyst (6) 5. Protein molecules released by the immune system in response to an antigen, which are capable of neutralizing the affects of the antigen (8)
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