B4

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1. What is osmosis?

  • is a process that takes place during respiration
  • a special form of diffusion. it is the overall movement of water, through partially permeable membrane from a dilute to a more concentrated solution
  • is a reaction that happens when two or more cells bond together
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2. What is the word equation for photosynthesis?

  • 6CO2 + 6H20 --light energy-->C6H12O6 + 602
  • carbon dioxide+water -- light energy --> glucose+oxygen
  • water+glucose ---light energy-->carbon dioxide+oygen

3. What 4 things must a animal cell have?

  • cytoplasm, egg, dna roll, cell wall
  • nucleus, cytoplasm, cell membrane and mitochondria
  • 2 nucleus, cytoplasm and cell membrane

4. What is photosynthesis affected by?

  • the temperature, carbon dioxide and light intensity
  • the time of day, amount of water in the last 24 hours, oxygen
  • the soil, type of plant, the colour of the stem

5. What does the cell membrane do?

  • acts as a helmet so the cell can bounce if it is dropped
  • regulates what is allowed to enter and leave the cell.
  • protects the nucleus

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