Active Transport

• What is the main topic discussed in the video?

  Active transport in root hair cells of plants
• How does active transport differ from diffusion?


  Active transport moves molecules against their concentration gradient, while diffusion moves them down their gradient
• What is diffusion?


  The process by which substances move down their concentration gradient
• Why is diffusion considered a passive process?


  Because it does not require any energy from the cell
• What analogy is used to describe diffusion in the video?


  Water flowing downhill
• What is active transport?


  The movement of molecules against their concentration gradient, requiring energy
• What type of process is active transport?


  An active process
• What is required for active transport to occur?


  Energy from the cell
• What provides the energy for active transport?


  Cellular respiration
• Where does cellular respiration mainly occur?


  In the mitochondria
• What molecule stores energy for the cell?

  ATP
• How can we define active transport based on the video?


  As the movement of molecules across a cell membrane from lower to higher concentration requiring energy
• Why do plants need to absorb water and mineral ions?


  To survive
• What are root hair cells adapted for?


  To absorb water and mineral ions
• What feature do root hair cells have to aid absorption?


  Long hair-like protrusions
• Why do root hair cells need to use active transport for mineral ions?


  Because the minerals are at a higher concentration inside the cell than outside
• What is one adaptation of root hair cells mentioned in the video?

  Having lots of mitochondria
• What is the process of active transport in root hair cells?


  • Movement of minerals from lower to higher concentration
  • Requires energy from cellular respiration
  • Involves special proteins in the cell membrane
• What are the adaptations of root hair cells for their function?


  • Long hair-like protrusions for increased surface area
  • Numerous mitochondria for energy production
• What resources does the learning platform offer?

  • Videos on various topics
  • Practice questions
  • Progress tracking