Active transport

• How does active transport differ from diffusion?

  Active transport requires energy, diffusion does not
• What is active transport?

  Movement of molecules against their concentration gradient
• What is the direction of movement in active transport?

  From lower concentration to higher concentration
• What analogy is used to describe diffusion?

  Water flowing downhill
• What type of process is diffusion?

  Passive process
• What provides the energy for active transport?

  Cellular respiration
• What is required for active transport to occur?

  Energy from the cell
• Where does cellular respiration mainly occur?

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

  ATP
• How can we define active transport in summary?

  Movement across a membrane requiring energy
• What is an example of active transport in plants?

  • Absorption of water and mineral ions
  • Occurs in root hair cells
  • Requires energy to move against concentration gradient
• Why do root hair cells have long protrusions?

  To increase surface area for absorption
• What minerals do plants need for chlorophyll production?

  Magnesium
• Why can't plants absorb minerals by diffusion?

  Minerals are at higher concentration inside cells
• What adaptation do root hair cells have for energy production?

  Lots of mitochondria
• What are the adaptations of root hair cells for absorption?

  • Long hair-like protrusions
  • Large surface area
  • Numerous mitochondria for energy
• What is the role of the learning platform mentioned?

  To watch videos and track progress
• What is the purpose of the link in the description?

  To access the lesson for the video