The energetics of coupled transport
sucrose concentration is higher in the cytoplasm than in the extracellular environment. na+ concentration is higher in the extracellular environment than in the cytoplasm. animal cells can take up sucrose against its concentration gradient using a na+/sucrose symporter. indicate if the following statements are true or false.
a. in the na+/sucrose symporter, na+ is also moving against its concentration gradient.
b. for the symporter to work, the cell must first establish a na+ concentration gradient.
c. a symporter works by making the phospholipid bilayer more permeable to ions and sucrose.
d. moving sucrose against its concentration gradient is a form of active transport.
e. a na+/sucrose antiporter would be capable of moving sucrose into the cell while moving na+ out of the cell.
f. since the na+/sucrose symporter exchanges a single sucrose for a single na+, it can also be considered a uniporter