Edexcel Topic 5 0.0 / 5 ? BiologyDNA, genetics and evolutionA2/A-levelEdexcel Created by: Paul ScullyCreated on: 26-08-14 09:23 3674215 Across 1. The temperature the DNA mixture is first heated to (in Celsius) (6, 4) 5. Viruses are _______ _____ surrounded by protein (7, 5) Down 2. What enzyme kills bacteria by damaging their cell walls? (8) 3. 1st stage of PCR involves free ___________ (11) 4. In gel electrophoresis, DNA moves towards the ________ electrode (8) 6. When infected with viruses, cells produce proteins called... (11) 7. What happens 4-6 hours after death in the muscles? (5, 6)
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