Which statements are true? Explain why or why not. Transport by transporters can be either active or passive, whereas transport by channels is always passive.
Added by Rachel W.
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Transporters, also known as carrier proteins, bind to specific molecules and undergo conformational changes to move the molecules across the membrane. This process can be either active or passive. Active transport requires energy (usually in the form of ATP) to Show more…
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Which of these statements is TRUE for passive transport across a biological membrane? Choose only those which apply. Passive transport is dependent on both, a solute electrochemical gradient and ATP. Passive transport is irreversible - a transporter can provide transport only in one direction. Passive transport is reversible - a transporter can provide transport in both directions. Passive transport can be provided by channels, but not by carrier transporters. Passive transport is driven by a solute electrochemical gradient.
Maitreya E.
Which of the following statements regarding passive transport is false? All passive transport relies on a concentration gradient as the driving force Facilitated diffusion can move solutions against their concentration gradient Osmosis involves the movement of water to equalize concentrations Ions require special protein transporters to diffuse in and out of the cell
Bryan V.
Which statements are true? Explain why or why not. Transporters saturate at high concentrations of the transported molecule when all their binding sites are occupied; channels, on the other hand, do not bind the ions they transport and thus the flux of ions through a channel does not saturate.
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