Match the transport processes to the sentence that most appropriately describes them: osmosis facilitated diffusion simple diffusion secondary active transport primary active transport process where a transport protein spends energy (ATP) to move a molecule up its concentration gradient process where a transport protein couples a molecule moving down its concentration gradient to allow a different molecule to move up its concentration gradient process where atoms/molecules down their concentration gradient with the aid of a transpor protein process where water moves through a membrane in response to a concentration gradient of a molecule that is not permeable process where atoms/molecules move down their concentration gradient without the help of a transport protein
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Matching: Match each description with the correct term. A. active transport B facilitated diffusion C. diffusion D. osmosis E. exocytosis 1. The movement of molecules from an area of HIGH concentration to an area of LOW concentration. 2. The diffusion of water molecules. 3. Energy is used to move molecules from an area of LOW concentration to an area of HIGH concentration. 4. Membrane proteins are used to move molecules across the membrane but no energy is required. 5. The movement of molecules down their concentration gradient. 6. The movement of molecules up against their concentration gradient. 7. Membrane proteins are used to move molecules across the membrane but energy from ATP is required 8. A type of active transport that involves vesicles moving molecules out of a cell.
Sri K.
Match the transport mechanisms with their descriptions. (1) diffusion (2) facilitated diffusion (3) filtration (4) active transport (5) endocytosis (6) exocytosis A. the cell membrane engulfs a particle or substance, drawing it into the cell in a vesicle B. movement down the concentration gradient with a carrier protein, without energy input C. movement down the concentration gradient without a carrier protein or energy input D. a particle or substance leaves a cell in a vesicle that merges with the cell membrane E. movement against the concentration gradient with energy input F. hydrostatic pressure forces substances through membranes
Using the answer code on the right, indicate the direction of net movement in each case: ___ 1. simple passive diffusion ___ 2. facilitated diffusion ___ 3. primary active transport ___ 4. Na1 during secondary active transport ___ 5. cotransported molecule during secondary active transport ___ 6. water with regard to the water concentration gradient during osmosis ___ 7. water with regard to the solute concentration gradient during osmosis (a) movement from high to low concentration (b) movement from low to high concentration
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