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moving randomly
Nonpolar molecules (example: lipids) Small polar molecules such as water
Diffusion - when particles move from an area of high to lower concentrationEffusion - when gas molecules escape from their container through tiny holes in the container.
Only nonpolar (hydrophobic) molecules can pass through the bi-lipid membrane. For example, hormones are nonpolar, and they can pass through the membrane.
One example of gas effusion is the release of a gas through a small hole in a container, such as when air slowly escapes from a balloon. Another example would be the diffusion of gas molecules through a porous membrane, like the way oxygen and carbon dioxide diffuse in and out of our lungs during respiration.
moving randomly
The names were chosen randomly out of a hat.She sprinkled salt randomly over the icy driveway.The dandelions are scattered randomly through the field.The coach chose the players randomly and not according to skill level.
Nonpolar molecules (example: lipids) Small polar molecules such as water
Nonpolar molecules (example: lipids) Small polar molecules such as water
Diffusion - when particles move from an area of high to lower concentrationEffusion - when gas molecules escape from their container through tiny holes in the container.
Only nonpolar (hydrophobic) molecules can pass through the bi-lipid membrane. For example, hormones are nonpolar, and they can pass through the membrane.
osmosis
Smoke moving through the air is an example of diffusion. It involves matter moving from an area of high concentration of molecules to an area of low concentration of molecules. It does not require energy, so it is passive transport.
One example of gas effusion is the release of a gas through a small hole in a container, such as when air slowly escapes from a balloon. Another example would be the diffusion of gas molecules through a porous membrane, like the way oxygen and carbon dioxide diffuse in and out of our lungs during respiration.
Water molecules spreading through a membrane with a change in cell size is an example of osmosis. In osmosis fluid passes both in and out of the semipermeable membrane in osmosis, but usually there's a net flow in one direction.
Molecules move in a fluid the same way they move through anything else. If the fluid is warmer, they move faster.
The molecules of the perfume have to diffuse through the air in order to reach and be detected by the nose of an observer.