SA : V ratio

• Why can single-celled bacteria rely on diffusion?

  They have a high surface area to volume ratio
• What resources do single-celled organisms need to absorb?

  Oxygen, glucose, and amino acids
• How is the surface area of a cube calculated?

  Area of one face multiplied by six
• What is the volume of a 1 cm cube?

  1 cubic centimeter
• How does the increase in size affect the surface area and volume of cubes?

  Volume increases faster than surface area
• Why can't humans rely solely on diffusion for substance exchange?

  They have a low surface area to volume ratio
• What specialized structures do humans have for gas exchange?

  Alveoli in the lungs
• 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 systems do larger organisms often have to aid in transport?

  Transport systems like the circulatory system
• What do plants use for substance exchange with the environment?

  Roots and leaves
• What tissues do plants use to transport substances?

  Phloem and xylem tissues
• Who is the presenter of the video?

  Amadeus
• What does the learning platform offer?

  Videos, practice questions, and progress tracking
• Where can you find the link to the lesson?

  In the description down below