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Osmosis and Diffusion Review (7th Grade)

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  • Particles naturally travel from...(passive)
    high
    low to high
    high to low
    low
  • Is energy required for active transport?
    yes
    no
  • Letting some things pass through but not others
    cell membrane
    heterotroph
    semi-permeable
  • Is energy required for passive transport?
    no
    yes
  • What is an example of diffusion?
    sugar molecules moving across semi-permeable membrane
    an egg being placed in fresh water
    water molecules moving across a membrane
  • You place a tea bag in a cup of hot water. After a few minutes, you notice that the water has changed color. Is this diffusion or osmosis?
    osmosis
    diffusion
  • A carrot stick is placed in fresh water. What will happen over time?
    the cells in the carrot will expand
    the cells in the carrot stay the same
    the cells in the carrot shrink
  • moving large particles out of a cell is
    exocytosis
    endocytosis
    concentration
  • Osmosis involves the movement of ________ particles across a membrane
    particles
    water
    air
  • When things spread out on their own (naturally)
    diffusion
    semi-permeable
    cell membrane
    osmosis
  • In passive transport, particles travel from
    side to side
    high to low
    low to high
  • The skin of a cell that controls what goes in and out
    autotroph
    cell membrane
    semi-permeable
    osmosis
  • Movement across a cell membrane using energy
    osmosis
    semi-permeable
    diffusion
    active transport
  • The smell of perfume moves across the entire room. This is an example of
    osmosis
    diffusion
    photosynthesis
    all of the above
  • Movement across a cell membrane without using energy
    diffusion
    semi-permeable
    osmosis
    passive transport
  • What will happen to an animal cell placed in salt water solution?
    it will stay the same
    it will shrink
    it will expand
  • If you place a drop of food coloring in a glass of still water. What is this considered?
    photosynthesis
    osmosis
    diffusion
  • If you place a raisin in a bowl of water and they expand, what is this referred to as?
    osmosis
    diffusion
    photosynthesis
  • What does semi-permeable mean?
    every particle is allowed into the cell
    only some particles are allowed in
    no particles are allowed into the cell
  • In active transport, particles move from
    low to high
    high to low
    side to side
  • When a cell takes something in by wrapping around it
    diffusion
    active transport
    endocytosis
    passive transport
  • moving large particles into the cell is
    endocytosis
    exocytosis
    concentration
  • When water moves through a cell membrane
    osmosis
    semi-permeable
    homeostasis
    diffusion
  • When a cell pushes something out
    osmosis
    exocytosis
    active transport
    diffusion
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