Study

Cell Transport

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  • molecules move from a ____ concentration to a ____ concentration
    high, low
  • Diffusion is an example of P___________ transport
    Passive
  • Name an example of diffusion
    digestion, cooking, spraying a can
  • simple diffusion and osmosis are P______ kind of transport?
    Passive
  • TRUE/ FALSE - The size of the particles affect whether they easily diffuse through the cell membrane
    TRUE
  • Name two places where diffusion happen in plants?
    Roots/ Stomata/
  • ____________ is the movement of ______ particles from a high concentration to a low concentration
    Diffusion, gas
  • Selective Permeability means..
    it allows some substances to pass through the membrane but not others
  • TRUE/ FALSE - One factor that affects diffusion is the number of particles
    FALSE
  • Where in the lungs does diffusion take place?
    Alveoli/ Alvelous Air Sacs
  • _Can diffusion happen in plants?
    Absolutely YES!
  • Diffusion takes place in solids and gases
    False/ No
  • C_______________ is number of molecules of a substance in a given area.
    concentration
  • molecules move ____ the concentration gradient
    down
  • Passive transport requires _____
    no energy
  • What does concentration gradient mean?
    The is the net difference between the high and low concentration of particles
  • diffusion requires ______
    Little/ no energy
  • Briefly explain how diffusion takes place in the lungs
    same
  • Identify two factors that affect the rate of diffusion
    Temperature, concentration gradient and surface area
  • _____ is the diffusion of water through a semi-permeable membrane
    osmosis