Biology unit 5 topic 8 5.0 / 5 based on 4 ratings ? Biologyunit 5A2/A-levelEdexcel Created by: SabinaCreated on: 14-04-16 10:32 8921051374 Across 1. By what form of transport will sodium ions be pumped out of the rod cell? (6, 9) 4. What is the role of the conjunctiva? (8, 3, 6) 5. What is produced by Schwann cell around the axon (5, 2, 5) 7. What is the name of the two photoreceptor cells found in the retina? (4, 3, 5) 10. How many synapses are there in the pupil reflex pathway? (5, 3, 3) Down 2. What does transcription of genes coding for enzymes result in? (9, 7) 3. What are there more of rods or cones? (4) 4. Suggest which isomer of phytochrome, Pr or Pfr, needs to be present to stimulate germination (3) 8. What is the outer layer of the brain known as? (4, 6) 9. Where is the cell body of a motor neurone always found? (6, 3, 3)
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