A- A Concentration Gradient
B- A Selectively Permeable Membrane
C- A Source of Energy
D- A Protein
The Answer Is (A)
Diffusion can occur without a semipermeable membrane, as diffusion is simply movement of a substance from high to low concentration. A source of energy is needed only for active transport. Proteins are needed if the the particles transported are too big to pass the semipermeable membrane.
concentration gradient
why it is neccesary
Diffusion is essential for cells to bring nutrients and releasing wastes without spending energy.
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Relocation Diffusion
Diffusion.
There are three forms of passive transport, or the movement of biochemical and other atomic or molecular substances across the cell membranes. They are: osmosis, simple diffusion or facilitated diffusion, and filtration.
Diffusion is essential for cells to bring nutrients and releasing wastes without spending energy.
Because without them, your nipples would not produce mountain dew.
Organs to be transplanted lack oxygen, nutrients and other essential materials, since they have been idle for a long time.Osmosis and diffusion help these organs filled with these essential materials, such as water, nutrients and materials, as if they were attached in the human body.BTW, osmosis is the flow of water from less concentration of solutes to high. Diffusion is the scattering of particles from higher cont to lower.
The scent of flowers is felt due to diffusion hence insects which are agents of pollination are attracted by the
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The diffusion problem is based on relative concentrations in and outside of the cell and a lipid bilayer´s permeability to most of the ions essential to cell processes. It is solved by active transport and facilitated diffusion through protein channels and pumps both passively and through the use of ATP. .... I think ...
The essential idea is the same: diffusion is the process by which molecules spread from areas of high concentratiion, to areas of low concentration. Osmosis is the process by which molecules of WATER spread from areas of high concentration (such as a dilute solution) to areas of low concentration (such as a concentrated solution), typically through a selectively permeable membrane. In short: Diffusion occurs as is, while osmosis occurs through a semi permeable membrane.
contagious diffusion, relocation diffusion, expansion diffusion, stimulus diffusion, hierarchical diffusion.
diffusion
Diffusion occurs when a substance moves from an area of high concentration to an area of low concentration. This will happen naturarally without disruption, But is more common (and will happen faster) in a warm environment.
Leaves have large surface areas to absorb as much light as possible, and are thin for rapid diffusion; also, they contain chlorophyll, essential for photosynthesis.
Relocation Diffusion