Which statement is true of both the sodium potassium pump (a type of active transport) and facilitated diffusion? a) both involve proteins in the cell membrane b) both move materials from high concentration to low concentration c) both require atp

The correct statement for the sodium-potassium pump and the facilitated diffusion is B) Both move the material from high concentration to low concentration.

Further explanation

Molecular transport across the membrane that occurs in animal cells can occur passively or actively. Active transport is the movement of molecules across a membrane that occurs against a concentration gradient with the help of energy in the form of ATP. Called against the concentration gradient because the molecules will move from a low concentration solution to a high concentration solution. Important to remember is that the molecules are solutes that move.

Active Transport does not seek to find the same concentration between the two parties. This transportation aims to maintain the concentration of certain molecules in normal amounts so that the body can work optimally. Some molecules are kept in high concentrations inside the cell and low outside the cell, and vice versa. The discussion of active transport will be emphasized in the sodium-potassium pump, endocytosis, and exocytosis.

Animal cells have high potassium concentrations and low sodium concentrations, conversely in extracellular fluid low potassium concentrations while high sodium concentrations. Potassium needs to be maintained in high concentrations so that important physiological processes in the cell are not disturbed.

The sodium-potassium pump occurs with the help of a carrier protein. An integral protein that acts as a carrier for ions in and out of cells. This protein will be active if it gets energy in the form of ATP. The phosphate group in ATP will bind to the carrier protein and cause changes in the structure of the protein which results in potassium ions entering the cell and sodium exiting the cell.

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Potassium sodium pump

Details

Class: High School

Subject: Biology

Keyword: Potassium sodium pump.

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