Examlex
A random sample of 100 boxes of cereal had a sample mean weight of 396 grams. The standard deviation is known to be 5 grams. The upper end of the confidence interval for the mean is 405.8 grams.
Hypotonic Solution
A solution that has a lower concentration of solutes compared to another solution, causing water to move into the cell in osmosis.
Net Movement
The overall transfer or migration of substances, such as molecules or ions, from an area of higher concentration to an area of lower concentration, often referring to processes like diffusion.
Sodium-potassium Pumps
Cellular membrane proteins that actively transport sodium out of and potassium into cells, essential for maintaining cell volume and resting membrane potential.
Ion Pumps
Proteins found in the cell membrane that use energy to transfer ions against their concentration gradient, maintaining the internal balance of cells.
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