A certain protein transports a sodium ion from the inside of the cell membrane to the outside using active transport.
Which of the following must be true?

when the concentration of particles is higher inside the cell and yet for proper functioning we need more ions, the ions are received by the cell by the means of active transport, in which dissolved substances are moved by the help of carrier proteins with the energy released from respiration.

every el niño cycle is different. every year.

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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