Foundational Physiology Test Exam Question & Answer (100% Correct)

Foundational Physiology Test Exam Question & Answer (100% Correct) For the mechanism of secondary active (ion-coupled) transport of glucose, which of the following is responsible for driving the transport events: 1. ATP direct coupling to the secondary active transporter protein molecule 2. The power of the gradient of glucose, which is a greater concentration outside the cell than inside the cell. 3. The power of the gradient of glucose, which is a greater concentration inside the cell than outside the cell 4. The power of Na+, which is a greater concentration outside the cell than inside the cell. 5. The power of Na+, which is a greater concentration inside the cell than outside the cell. - CORRECT ANSWER-Answer: 4 In ion-coupled or secondary active transport, a solute is moved against its concentration gradient by being 'carried' along with an ion moving WITH its concentration gradient