Biology Unit 1 5.0 / 5 based on 1 rating ? BiologyASAQA Created by: JenCreated on: 06-01-13 16:39 4321 Across 1. What are the tendons that connect the valves to the muscles? (7, 8) Down 2. What are polypeptide chain held together by? (7, 5) 3. What is the only artery in the body that carries deoxygenated blood? (9, 6) 4. Name the 3 types of pathogen that there are (8, 5, 5)
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