51ºÚÁÏ

All resources for B2.1 Supplying the cell GCSE OCR Biology Gateway 9-1. Triple and combined (Higher and Foundation) is covered in this material.

Each PowerPoint is a whole lessons included with student activities and animated answers.

• Definition of diffusion from high concentration to lower concentration.
• What diffuses in and out of cells.
• How the rate of diffusion is affected by distance, surface area, and concentration gradient.
• How the human body has adapted to increase the rate of diffusion.
• Definition of osmosis.
• Explaining water potential and concentration of solution.
• How cells change during osmosis - turgid, lysis, crenated, plasmolysed.
• Definition of active transport
• Key features of active transport
• Against concentration gradient.
• ATP and respiration
• Protein carriers in cell membrane
• Active transport in plant cells - root hair cells
• Active transport and protein carriers
• The cell cycle
• DNA replication
• Movement of chromosomes
• Cytokinesis (cell division)
• Growth of daughter cells.
• Stem cell donation registration process
• Stem cells are undifferentiated cells.
• Describe the difference between adult and embryonic stem cells.
• Stem cells are found in plant meristems
• Explain why stem cells are used in medicine.
• Describing the structure of the following cells:
  • Sperm cell
  • Fat cell
  • Red blood cells
  • Ciliated cells
  • Palisade cells