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Study with Quizlet and memorize flashcards containing terms like the cell membrane allows some, but not all, molecules to cross. What term describes this property?, what is a concentration gradient?, what does it mean for a molecule to diffuse down a concentration gradient? and more.
22 hours ago · Study with Quizlet and memorize flashcards containing terms like What are some exceptions to Mendel's principles?, incomplete dominance, codominance and more.
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What is a concentration gradient?
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Movement of specific molecules across cell membranes through protein channels. Study with Quizlet and memorize flashcards containing terms like What is a concentration gradient?, What does it mean for a molecule to diffuse down a concentration gradient?, What does diffusion require? and more.
Diffusion through a permeable membrane moves a substance from an area of high concentration (extracellular fluid, in this case) down its concentration gradient (into the cytoplasm). Each separate substance in a medium, such as the extracellular fluid, has its own concentration gradient, independent of the concentration gradients of other materials.
Concentration gradients. Particles move from high to low concentration areas, a process called diffusion. Each particle type has its own unique concentration gradient. This movement isn't planned, but happens randomly. Over time, particles spread evenly, balancing the probability of movement in all directions.
- 3 min
- Sal Khan
- Equilibrium is when the molecules are distributed evenly in an area. The concentration gradient is removed at equilibrium, but particles will conti...
- There is no goal in concentration gradient, this is just an effect of the constant motion that particles have.
- By putting any kind of barrier in the form of something impermeable between molecules. In that case, molecules cannot move.
- Well, the presence of the membrane itself helps to create a concentration gradient. Once you have a barrier it helos creating 2 different compartme...
- their temperature i.e. average kinetic energy
- No, since the membrane is not permeable. Then you have two containers with different concentrations but there is no connection between those contai...
- it usually doesn't you can check the concentration but this is not likely by a lot
- Yes, diffusion happens, because atoms are always moving (you can feel it as the temperature of something) and because they collide they have very r...
In passive transport, substances move from an area of higher concentration to an area of lower concentration in a process called diffusion. A physical space in which there is a different concentration of a single substance is said to have a concentration gradient.
Dec 5, 2014 · The electrochemical gradient determines the direction an ion moves by diffusion or active transport across a membrane. In mitochondria and chloroplasts, proton gradients are used to generate a chemiosmotic potential that is also known as a proton motive force, due to both the proton gradient and voltage gradient across the membrane.
