Biology OCR Gateway A B2

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  • Created by: Sanvi_123
  • Created on: 02-10-18 19:29

1. What is active transport

  • Movement of particles from a low to high concentration gradient
  • Breaking down of intermolecular bonds
  • Movement of particles from a high to low concentration gradient
  • Random movement of particles
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2. Which area of the heart has the thickest walls

  • Left ventricle
  • Left atrium
  • Right ventricle
  • Right atrium

3. What factor does not increase diffusion

  • Greater concentration gradient
  • Shorter distance
  • Greater distance
  • Larger surface area
  • Higher temperature

4. What happens in prophase (B2.1.4)

  • Chromosome move to opposite ends of the cell
  • Duplicated chromosomes line up in the middle of the cell
  • Nuclear membrane condenses, chromosomes start to duplicate
  • Nucleus starts to split

5. What are embryonic stem cells

  • Specialised cells
  • Stem cells found in adults
  • Stem cells found in embryos
  • Stem cells found in plants
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