LABORATORY REVIEW
DIFFUSION AND OSMOSIS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
the movement of molecules from a higher to a lower concentration, against a concentration gradient
|
|
|
the movement of molecules from a higher to a lower concentration, down a concentration gradient
|
|
|
the movement of molecules from a lower to a higher concentration, against a concentration gradient
|
|
|
the movement of molecules from a lower to a higher concentration, down a concentration gradient
|
Detailed explanation-1: -Diffusion is defined as the net movement of molecules from an area of greater concentration to an area of lesser concentration. The molecules in a gas, a liquid or a solid are in constant motion due to their kinetic energy.
Detailed explanation-2: -Diffusion is defined as the movement of individual molecules of a substance through a semipermeable barrier from an area of higher concentration to an area of lower concentration [34].
Detailed explanation-3: -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-4: -It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration.-CORRECT.
Detailed explanation-5: -Diffusion is the net movement of molecules from an area where they are at a higher concentration to areas where they are at a lower concentration. This is due to the random movement of the molecules. The difference in the concentration of a substance between two areas is called the concentration gradient .