You are in the library researching the mechanisms that eukaryotic cells use to acidify some of their organelles. In several particular species of amoeba, you find that the cells use a H+ ATPase (AKA a proton pump) to acidify the inside of their lysosomes, while many plant cells use a proton/Cl- antiporter to keep the interior of their vacuoles at a pH of ~6.3. Compare these two mechanisms of proton transfer, specifying what is allowing the H+ to enter these organelles. In your answer, specify whether each of these mechanisms is an example of simple diffusion, passive transport, or active transport. Would these transporter proteins be channels or carriers? If a mechanism is an example of active transport, specify how the energy requirement for transfer is being satisfied.
You are in the library researching the mechanisms that eukaryotic cells use to acidify some of their organelles. In several particular species of amoeba, you find that the cells use a H+ ATPase (AKA a proton pump) to acidify the inside of their lysosomes, while many plant cells use a proton/Cl- antiporter to keep the interior of their vacuoles at a pH of ~6.3. Compare these two mechanisms of proton transfer, specifying what is allowing the H+ to enter these organelles. In your answer, specify whether each of these mechanisms is an example of simple diffusion, passive transport, or active transport. Would these transporter proteins be channels or carriers? If a mechanism is an example of active transport, specify how the energy requirement for transfer is being satisfied.
