The diagram illustrates how nicotine is carried from the blood plasma into a cell by a cotransporter mechanism. In phloem tissue, a cotransporter mechanism transfers sucrose into the cytoplasm of a companion cell. Which statement accurately describes a similarity between the cotransport of nicotine and the cotransport of sucrose?
- AThe cotransporter proteins generate a proton gradient by moving protons out of the cell by active transport.
- BThe protons are transported through the cotransporter proteins by facilitated diffusion.
- CThe protons move through the cotransporter proteins in the opposite direction to the movements of nicotine and sucrose.
- DThe cotransporter proteins use energy from ATP to transport protons with nicotine and sucrose.