THE CELL
TRANSPORT INTO AND OUT OF THE CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A difference in concentrations that drives molecules to flow from high to low concentrations
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Molecules maintaining homeostasis by moving to areas of higher concentrations
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A membrane filtering out large, charged, and insoluble molecules.
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The process of using energy to move large amounts of material into or out of a cell.
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Detailed explanation-1: -A concentration gradient occurs when the concentration of particles is higher in one area than another. In passive transport, particles will diffuse down a concentration gradient, from areas of higher concentration to areas of lower concentration, until they are evenly spaced.
Detailed explanation-2: -Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration. For cell transport, diffusion is the movement of small molecules across the cell membrane.
Detailed explanation-3: -High concentration means the amount of solute is high in the solution and low concentration means it is low. Amount of solvent is high in low concentration and low in high concentration of solute.
Detailed explanation-4: -Final answer: Movement of molecules from their higher concentration to their lower concentration is called diffusion.
Detailed explanation-5: -The gradient is the slope of one particular point of a concentration profile. In linear concentration profiles, the gradient (slope) is identical at all positions, whereas the absolute concentration changes. When there are no concentration differences, the gradient is 0.