science crossword. 0.0 / 5 ? BiologyallIGCSEEdexcel Created by: georgie2310Created on: 23-07-19 09:23 8312610597 Across 1. The pressure that blood exerts on artery walls. (5, 8) 5. A tiny blood vessel with walls just one cell thick. (9) 6. A thick-walled blood vessel used to take blood away from the heart. (6) 7. The protein on the outside of a pathogen. (7) Down 1. A single cell organism. (8) 2. Deoxyribonucleic acid. (3) 3. The genetic make up of a cell. (8) 8. A protein produced by the body's immune system, in responce to a particular antigen. (8) 9. A hormone released by the pituitary gland, that stimulates the kidneys to reabsorb water. (3) 10. An enzyme used by human saliva to help start the digestive process. (7, 0)
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