Surface area to volume ratio

Cards (32)

  • Why can single-celled bacteria rely on diffusion?
    They have a high surface area to volume ratio
  • What do large multicellular organisms require for substance exchange?
    Specialized exchange surfaces and transport systems
  • What resources do single-celled organisms need to absorb?
    Oxygen, glucose, and amino acids
  • What waste products do single-celled organisms need to eliminate?
    Carbon dioxide
  • How does surface area to volume ratio affect organisms?
    It determines their ability to exchange substances
  • What happens to surface area to volume ratio as organisms get larger?
    It decreases
  • How does the surface area to volume ratio change from a bacterial cell to a cow?
    It decreases as size increases
  • What is the surface area of a cube calculated from?
    Area of one face multiplied by six
  • What is the surface area of a 1 cm cube?
    6 square centimeters
  • What is the volume of a 1 cm cube?
    1 cubic centimeter
  • What is the surface area to volume ratio of a 1 cm cube?
    6 to 1
  • What is the surface area of a medium cube with a volume of 8 cm³?
    24 square centimeters
  • What is the surface area to volume ratio of the medium cube?
    3 to 1
  • What is the surface area of the largest cube with a volume of 27 cm³?
    54 square centimeters
  • What is the surface area to volume ratio of the largest cube?
    2 to 1
  • How do surface area and volume change as cubes increase in size?
    Volume increases faster than surface area
  • Why can't humans rely solely on diffusion for substance exchange?
    We have a low surface area to volume ratio
  • What specialized exchange surfaces do humans have?
    Lungs and intestines
  • What do alveoli in the lungs provide?
    A huge surface area for gas exchange
  • What do villi in the intestines provide?
    A massive surface area for nutrient absorption
  • How does diffusion distance change in larger organisms?
    It increases significantly
  • How much further do molecules have to diffuse in humans compared to bacteria?
    50,000 times further
  • Why do larger organisms need transport systems?
    To transport molecules efficiently around the body
  • What do plants use for substance exchange?
    Roots and leaves
  • What tissues do plants use to transport substances?
    Phloem and xylem
  • What does "large organisms" refer to?
    Anything visible to the naked eye
  • What is the purpose of the learning platform mentioned?
    To watch videos and track progress
  • What is provided in the description of the video?
    A link to the lesson
  • What is arranged in a playlist?
    All videos for this subject
  • Surface area: volume ratio
  • Surface area: volume ratio
  • Surface area: volume ratio