Proton pumps embedded in the cell membrane use ATP to move hydrogen ions across the membrane. Which of the following best describes a function of the proton pump? It decreases the pH inside the cell to prevent toxicity.
It generates a voltage across the membrane as a way to store energy.
It helps maintain homeostasis by absorbing electrical charges.
It increases the fluidity of the cell membrane as energy is used.

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the answer u all are looking for is 4000000000000000000000 million years.

the limb fractures are among the most common fractures. open fractures are comparatively more dangerous. the injury patterns are dependent on many factors, such as the age of the person, and mechanism of the injury. the closed fractures of the limbs if left untreated may lead to a significant amount of the blood loss, which may be life-threatening for the person. approximately 1000-1500 ml of blood is lost in the close fracture of the femur, and 500-1000 ml of blood is lost in the closed fracture of lower part of the limbs.