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Aim How do molecules move in and out of a cell?

Aim How do molecules move in and out of a cell?. Transport. The movement of molecules across the cell membrane. Examples of Transport. Passive transport (No energy needed) Active transport (ATP Energy needed). Plasma or cell membrane. Passive Transport. Diffusion

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Aim How do molecules move in and out of a cell?

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  1. AimHow do molecules move in and out of a cell?

  2. Transport • The movement of molecules across the cell membrane

  3. Examples of Transport • Passive transport (No energy needed) • Active transport (ATP Energy needed) Plasma or cell membrane

  4. Passive Transport • Diffusion • High to Low concentration • No energy required

  5. Active Transport • Low to High concentration • Energy is needed • ATP is used

  6. Which way do molecules move naturally across membrane? • Towards the side with the least amount so it evens up • Hi to low • Count them

  7. Size of molecule counts Pass through (small) Can’t pass through (large) Starch Proteins • Water(osmosis) • Oxygen • Carbon dioxide • Glucose • Amino Acids

  8. The diagram below shows molecules represented by X both outside and inside of a cell. A process that would result in the movement of these molecules out of the cell requires the use of • DNA • ATP • antigens • antibodies

  9. The diagram represents movement of a large molecule across a membrane. Which process is best represented in this diagram? • active transport • diffusion • protein building • gene manipulation

  10. Which factor prevented the protein molecules from moving out of the cell? 1.temperature 2.pH 3.molecule size 4.molecule concentration

  11. The diagram below represents a container of water and two different kinds of molecules, A and B, separated into two chambers by a membrane through which only water and molecule A can pass. Which diagram of the container below correctly indicates the distribution of molecules A and B after the net movement of these molecules stops?

  12. Molecules A and B come in contact with the cell membrane of the same cell. Molecule A passes through the cell membrane readily, but molecule B does not. Which statement could describe molecules A and B? 1.Molecule A is a protein, and molecule B is a fat. 2.Molecule A is a starch, and molecule B is a simple sugar. 3.Molecule A is an amino acid, and molecule B is a simple sugar. 4.Molecule A is a simple sugar, and molecule B is a starch

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