Guided course 06:57Primary Active Transport: Na+/K+ PumpJason Amores Sumpter6412views104rank1comments
04:51Cell Membrane Transport - Transport Across A Membrane - How Do Things Move Across A Cell MembraneWhats Up Dude1109views
Multiple ChoiceThe force driving simple diffusion is ________, while the energy source for active transport is ________.4047views30rank1comments
Multiple ChoiceWhich of the following defines the type of transport by the sodium-potassium pump?2026views20rank
Multiple ChoiceActive transport requires an input of energy and can also generate voltages across membranes. Based on this information, which of the following statements is true? 2257views
Multiple ChoiceGlucose can be moved into cells via an active transport mechanism when the concentration of glucose inside the cell is higher than the concentration of glucose outside the cell. This active transport mechanism moves glucose and sodium into the cell at the same time. The glucose moves up its gradient and the sodium moves down its gradient. Which of the following statements about this mechanism is accurate? 7168views1rank
Multiple ChoiceWhich of the following statements about cotransport of solutes across a membrane is correct? 1276views
Multiple ChoiceConsider the transport of protons and sucrose into a plant cell by the sucrose-proton cotransport protein. Plant cells continuously produce a proton gradient by using the energy of ATP hydrolysis to pump protons out of the cell. Why, in the absence of sucrose, do protons not move back into the cell through the sucrose-proton cotransport protein? 1363views
Multiple ChoiceWhich of the following correctly describes a general property of all electrogenic pumps? 1317views
Textbook QuestionWhich of the following forms of membrane transport require specific membrane proteins? a. diffusion; b. exocytosis; c. facilitated diffusion; d. active transport; e. facilitated diffusion and active transport1337views
Textbook QuestionWhich of the following cannot pass through the membrane without the help of a membrane protein? a. carbon dioxide; b. water; c. oxygen; d. charged molecules1538views