Surface area to volume ratio

Cards (31)

  • 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 product do single-celled organisms need to eliminate?
    Carbon dioxide
  • What does the surface area to volume ratio measure?
    Comparison of surface area to internal volume
  • What happens to the surface area to volume ratio as organisms get larger?
    It decreases
  • How is the surface area of a cube calculated?
    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 volume of the medium cube?
    8 cubic centimeters
  • What is the volume of the largest cube?
    27 cubic centimeters
  • What is the surface area to volume ratio of the largest cube?
    2 to 1
  • How does the surface area to volume ratio change from the smallest to the largest cube?
    It decreases from 6 to 1 to 2 to 1
  • Why do larger organisms need specialized exchange surfaces?
    To increase their surface area to volume ratio
  • What is the role of villi in the intestines?
    To absorb nutrients
  • 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
  • What transport system do larger organisms often have?
    The circulatory system
  • What do plants use to exchange substances with the environment?
    Roots and leaves
  • What tissues do plants use to transport substances?
    Phloem and xylem
  • What does the term "large organisms" refer to?
    Anything visible to the naked eye
  • Who is the presenter of the video?
    Amadeus
  • What does the learning platform offer?
    Videos, practice questions, and progress tracking
  • Is the learning platform free?
    Yes, it is completely free
  • Where can you find the link to the lesson?
    In the description below
  • What is the purpose of the playlist mentioned?
    To organize all videos for the subject
  • What is the final message of the video?
    Hope you enjoy and see you next time