Active Transport

• What is the main topic of the video discussed in the study material?

  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?

  Diffusion is 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?

  It is compared to water flowing downhill
• What is active transport?

  Active transport is the movement of molecules against their concentration gradient
• What does active transport require from the cell?

  Energy
• What is the analogy used to describe active transport?

  It is compared to water moving uphill
• Where does active transport take place?

  Across a cell membrane
• What do root hair cells require for active transport?

  Special proteins that transfer molecules across the membrane
• What is the source of energy for active transport in cells?

  Cellular respiration
• What do ATP molecules do in the cell?

  They act like batteries, transporting energy to different parts of the cell
• Where does cellular respiration mainly occur?

  In the mitochondria
• How can we define active transport?

  • Movement of molecules across a cell membrane
  • From a region of lower concentration to a region of higher concentration
  • Requires energy from cellular respiration
• Why do plants need to absorb water and mineral ions from the soil?

  To survive and carry out essential functions
• What are root hair cells adapted for?

  They are adapted to absorb water and mineral ions
• What feature of root hair cells increases their absorption efficiency?

  Long hair-like protrusions that increase surface area
• Why can't plants absorb certain minerals by diffusion?

  Because the minerals are at a higher concentration inside the cell than outside
• How do root hair cells use active transport?

  They use energy to absorb minerals against their concentration gradient
• What is a key adaptation of root hair cells related to energy production?

  Having lots of mitochondria
• What are the key adaptations of root hair cells for their role?

  • Large surface area due to long hair-like protrusions
  • Lots of mitochondria for energy production
• What is the purpose of the learning platform mentioned in the video?

  To watch videos, practice questions, and track progress
• What is the link provided for in the video description?

  To the lesson for the particular video
• What is mentioned about the arrangement of videos for the subject?

  They are arranged in a playlist