active transport

    Cards (16)

    • What is active transport?
      Movement of molecules against their concentration gradient
    • How does active transport differ from diffusion?
      Active transport requires energy, diffusion does not
    • What analogy is used to describe diffusion?
      Water flowing downhill
    • What is the energy source for active transport?
      Energy from cellular respiration
    • Where does cellular respiration mainly occur?
      In the mitochondria
    • What are ATP molecules compared to?
      Little batteries for energy transport
    • What is the definition of active transport?
      • Movement of molecules across a cell membrane
      • From lower concentration to higher concentration
      • Requires energy from cellular respiration
    • Why do plants need to absorb water and mineral ions?
      To survive and grow
    • What are root hair cells adapted for?
      Absorbing water and mineral ions
    • How do root hair cells increase absorption efficiency?
      By having long hair-like protrusions
    • Why can't plants absorb minerals by diffusion?
      Minerals are at higher concentration inside cells
    • What is a key adaptation of root hair cells related to energy?
      Having many mitochondria for energy production
    • What are the key features of root hair cells?
      • Long hair-like protrusions for surface area
      • Many mitochondria for energy production
      • Function to absorb water and mineral ions
    • What minerals do plants need for chlorophyll production?
      Magnesium ions
    • What do plants need nitrates for?
      To produce proteins
    • What is the role of cellular respiration in active transport?
      It provides energy for the process
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