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HELP CENTER Incorrect Question 17 0 / 4 pts The figure shows the movements of hydrogen ions (H+), potassium ions (K+), sucrose molecules, and calcium ions (Ca2+) through a cell membrane. The relative concentrations of each ion (high or low) are provided. From left to right, the proteins are labeled A, B, C and D. Low H* Low K* Low K+ Low sucrose High Ca2+ OUTSIDE CELL INSIDE CELL High H* High K* High K* High sucrose Low Ca2+ A B C D Which protein is an antiporter? Protein A UX mode F9 F10 Ins