transport membrane

transport membrane
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  • Hi, Today we are gonna explore what we learned about transport membrane, energy production, and protein production.
  • Yes, Lets get started with transport membrane.
  • cell membrane is a barrier around the cell. For the cell to survive some molecule need to enter and leave the cell
  • Types of transport: Simple Diffusion, Facilitated diffusion, Osmosis and Active transport. Diffusion is the passive net movement of molecules from a region of their high concentration to a region of lower concentration down a concentration gradient. O2, CO2, H2O molecules diffuse out of the cell membrane. In Facilitated diffusion, many ions and large molecules, e.g glucose seem to pass through cell membrane. In this diffusion proteins in the cell membrane act as carries.
  • You got it!
  • Osmosis is the diffusion of water from an area of high concentration of water molecules to an area of low concentration of water across a partially permeable memtane.
  • Active transport is movement of molecules from a lower concentration to higher concentration. It is against of concentration gradient that's why it need ATP.
  • Oh, now it make sense why Active transport needs ATP and others don't, it because of against concentration gradient.
  • Active transport process needs specialized proteins which are carrier proteins to bind with the particles and transport it.
  • The transport protein pumps sodium ions out of the cell as potassium ions are pumped into the cell.
  • Large particles cross the membrane by any of four active transport processes which are: Exocytosis, Endocytosis, Pinocytosis, phagocytosis.
  • Anna and Doris, I think membrane transport, energy production and protein production are very important for cell to live.
  • membrane transport allows needed molecules to go in and out and protein helps membrane in this transaction.
  • I agree with both of you, Protein is essential macromolecule in our body that helps membrane to transport molecules and in cellular respiration to produce energy.
  • without cellular respiration individual cells will not be able to obtain the energy and our body will not function.
  • You are right Raj, energy production is needed for healthy life
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