Bio 1

• cell


  basic unit of life
• cat


  feline animal
• Passive process


  1. Diffusion

  2. Area of high to low concentration

  3. Can happen through materials-cell
• 07cmmbro pochally ponade
• energy


  ability to do work
• Cly


  some molecules
• outside


  external to something
• amiracids


  amino acids
• Factors that can affect rate of diffusion

  • Concentration gradient
  • Temperature
  • Surface area
• Concentration gradient


  Longer concentration gradient, higher rate of diffusion
• Temperature


  More energy to particles, faster movement
• Surface area


  Larger surface area, higher rate of diffusion
• Osmosis


  Net movement of water molecules across a permeable membrane from an area of high water concentration to an area of low water concentration
• Osmosis


  Movement of water molecules from high to low water concentration
• Osmotic pressure


  Pressure exerted by water molecules moving from high to low concentration
• Active Transport


  1. Requires energy

  2. Moves substances against concentration gradient

  3. Allows uptake of nutrients
• Lack words
• And you against concetratings