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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The movement of particles from an area of low to high concentration (up a concentration gradient)
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Particles moving in any direction across a cell membrane
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The movement of gas particles from an area of low to high concentration
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The movement of particles from an area of high to low concentration (down concentration gradient)
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Detailed explanation-1: -Diffusion in physics is the movement of particles from an area of higher concentration to an area of lower concentration as driven by thermal energy. This definition is affirmed as well in chemistry.
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: -Which statement best describes particle movement during simple diffusion? Particles move from an area of high concentration to an area of low concentration.
Detailed explanation-4: -Osmosis And Diffusion Definitions Diffusion: Diffusion is the movement of particles from an area of higher concentration to lower concentration. The overall effect is to equalize concentration throughout the medium.
Detailed explanation-5: -During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP).