Using energy from ATP, sodium-potassium pumpsactively transport ions in both directions across the membrane. 2. Some potassium channelsare open, allowing certain ions to move out of the cell through them. 3. The sodium channels are closed, preventing certain ions from entering the cell through them. 4. The concentration of sodium ionsis higher outside the cell than inside. 5. The concentration of potassium ionsis higher inside the cell than outside.

What are the similarities of physical and chemical change ?

You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices

What type of energy conversion occurs when you place your feet near the fire place and they become warm