Active transport

• What is the purpose of active transport in cells?


  To move substances against a concentration gradient
• How does active transport differ from passive transport?


  Active transport requires energy, while passive transport does not
• What energy source is used for active transport in cells?


  Energy released by respiration
• What role do protein transport molecules play in active transport?


  They help move substances across the cell membrane
• What is the process of active transport in plants?


  • Root hair cells absorb minerals from soil
  • Minerals move from low concentration in soil to high concentration in cells
  • Magnesium ions are essential for chlorophyll production
  • Nitrate ions are necessary for amino acid and protein synthesis
• How does active transport function in animals?

  • Food molecules like glucose are absorbed in the small intestine
  • Active transport moves glucose from the gut into the bloodstream
  • This occurs when blood concentration of glucose is higher than in the gut
  • Glucose is used in respiration for energy
• What is an example of a substance that plants transport via active transport?


  Magnesium ions
• What is an example of a substance that animals transport via active transport?


  Glucose
• Why do plants need nitrate ions?


  For amino acid production and protein synthesis
• What is the relationship between active transport and respiration?


  Active transport relies on energy from respiration
• How does the concentration gradient affect the process of active transport?


  Active transport moves substances from low to high concentration, against the gradient
• If a cell needs to absorb more glucose than is present in the bloodstream, what process will it use?

  Active transport
• What is the main function of root hair cells in plants?


  To absorb minerals and water from the soil
• How does active transport benefit plants in nutrient uptake?


  It allows them to absorb essential minerals from dilute solutions in the soil
• What would happen to a plant if it could not perform active transport?


  It would struggle to absorb necessary minerals for growth
• In what scenario would active transport be necessary for an animal cell?


  When glucose levels in the blood are lower than in the gut