Biology Revision Section 1 of B3 Section 1 in the revision guide (up to first extended writing) 0.0 / 5 ? Biologyrevision guideGCSEEdexcel Created by: Anna_Ryan_Created on: 13-11-15 21:58 8104351976 Across 1. Surface proteins that identify a cell. (8) 5. Carries clean bloody back to the body. (5, 5) 6. Takes place at around day 14 of the menstrual cycle. (9) 7. It takes this long to kill microorganisms. (2, 4) 10. Antibodies that carry useful chemical markers or treatments. (10, 10) Down 1. Secreted by the pituitary gland. (3) 3. Used to relieve symptoms eg pain and fever. Comes from a willow tree and other plants. (7) 4. This protects you from infection. (12) 8. The response of a plant that changes as day length changes. (14) 9. Small pox and what have similar antibodies. (3, 3)
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