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Is diffusion quicker when there is a higher concentration gradient?
Yes, diffusion is quicker when there is a higher concentration gradient because it drives the movement of molecules from areas of higher concentration to areas of lower concentration more rapidly. The steeper the concentration gradient, the faster the rate of diffusion.
Does glucose enters a cell most rapidly by facilitated diffusion?
No, glucose enters a cell most rapidly through facilitated diffusion with the help of glucose transporters, such as GLUT proteins. Facilitated diffusion allows glucose to move down its concentration gradient into the cell without requiring energy.
Compare and contrast diffusion and facilitated diffusion?
They both require a trans membrane protein. Facilitated diffusion does not require energy whereas active transport requires energy. Facilitated diffusion takes place when there is a net movement of molecules from a region of high concentration to a region of low concentration whereas active transport takes place when there is a net movement of molecules from a region of low concentration to a region of high concentration.
Does the rate of diffusion change over time?
The rate of diffusion typically decreases over time as the concentration gradient between two areas diminishes. Initially, diffusion occurs rapidly when there is a significant difference in concentration, but as equilibrium is approached, the rate of diffusion slows down.
Does water tend to diffuse from a region where it is less concentrated to a region where it is highly concentrated?
Maybe you mean osmosis?However, osmosis is not the same as diffusion of water. Diffusion of water is just diffusion like with any other substance: the particles spreading, making a homogeneous distribution. Osmosis involves a semipermeable membrane, where water goes from low solvent concentration to high solvent concentration.answ2. However, in the oceans, the turbulence is very much less than that of the air. Thus whilst C14 for example diffuses reasonably rapidly in the air, and may be assumed to homogenize after a few years; in the oceans the rate of diffusion is very much slower.And the oceans are known to stratify. For example in the Fiords in New Zealand, there forms a fresh water layer on top of the sea water, and this is known to freeze in winter. The ocean water itself in the same locale never gets cold enough to freeze.
Is diffusion quicker when there is a higher concentration gradient?
Yes, diffusion is quicker when there is a higher concentration gradient because it drives the movement of molecules from areas of higher concentration to areas of lower concentration more rapidly. The steeper the concentration gradient, the faster the rate of diffusion.
Describe two variables that affect the rate of diffusion?
Two key variables that affect the rate of diffusion are temperature and concentration gradient. Higher temperatures increase the kinetic energy of particles, leading to faster movement and a quicker rate of diffusion. Additionally, a steeper concentration gradient, where there is a greater difference in concentration between two areas, accelerates the diffusion process as molecules move from areas of high concentration to low concentration more rapidly.
What is the effect of the chloride ion concentration on its rate of diffusion in agar?
Increasing the chloride ion concentration will generally increase its rate of diffusion in agar. This is because a higher concentration gradient will drive chloride ions to diffuse more rapidly through the agar medium. Ultimately, diffusion rate is directly proportional to the concentration gradient of the solute.
Diffusion in the states of matter?
Diffusion is the movement of particles from an area of high concentration to an area of low concentration. In gases, diffusion occurs rapidly due to the high kinetic energy of the particles. In liquids and solids, diffusion is slower but still occurs as particles move and spread out over time.
Does glucose enters a cell most rapidly by facilitated diffusion?
No, glucose enters a cell most rapidly through facilitated diffusion with the help of glucose transporters, such as GLUT proteins. Facilitated diffusion allows glucose to move down its concentration gradient into the cell without requiring energy.
Does the steepness of con centration gradient affect the rate of difussion?
Yes, the steeper the concentration gradient, the faster the rate of diffusion. This is because there is a greater difference in concentration between two regions, driving molecules to move from areas of high concentration to areas of low concentration more rapidly.
Why urea can't cross membranes?
Passive diffusion - Urea has its own concentration gradient so it will go from an area of high concentration through the cell membrane into an area of lower concentration.
How is facilitated diffusion different than normal diffusion?
Diffusion is the movement of molecules or partocles from an area of high concentration to an area of lower concentration, and Facilitated diffusion is when substances difuse across cell membranes more rapidly than you might expect.
How it is possible for oxygen to diffuse rapidly into the blood?
Oxygen diffuses rapidly into the blood due to the concentration gradient between the alveoli in the lungs and the blood in the capillaries surrounding them. The alveoli have a high concentration of oxygen, while the blood has a lower concentration, which drives the diffusion of oxygen across the thin walls of the alveoli and capillaries. Additionally, the large surface area and short diffusion distance in the lungs help facilitate the rapid diffusion of oxygen into the blood.
Compare and contrast diffusion and facilitated diffusion?
They both require a trans membrane protein. Facilitated diffusion does not require energy whereas active transport requires energy. Facilitated diffusion takes place when there is a net movement of molecules from a region of high concentration to a region of low concentration whereas active transport takes place when there is a net movement of molecules from a region of low concentration to a region of high concentration.
How can you use the word gradient in a sentence?
The gradient of the hill forced the road to detour through the valley. The concentration gradient rapidly diminishes when salt water and fresh water mix.
What is Fick's law?
Ficks laws (note that there are two of them) are:Most people are concerned with Fick's first law which relates the diffusive flux to the concentration under the assumption of steady state:R=D X A Dp / dR=the rate of diffusionD=diffusion coefficient, which is a characteristic of the medium and varies exponentially with temperatureA=the surface areaand dC/dx Is the concentration gradient over the diffusion distanceFick's first law suggests that the rate of diffusion in a given direction across and exchange surface:1. is directly proportional to the concentration gradient- the steeper the concentration gradient, the faster the rate of diffusion2. is directly proportional to the surface area- the greater the surface area of a membrane through which diffusion is taking place, the faster the rate of diffusion this is one of the factors which limits cellsize.3. is inversely proportional to the distance- the rate of diffusion decreases rapidly with distance. diffusion is thus effective only over short distances. this limits cell size.Fick's second law predicts how diffusion causes the concentration to change with time. It is a partial differential equation which, within the character limitations of Wikianswers, the second law is:δφ/δt = ▼·(D▼φ)whereδ is being used as the symbol for partial differentialφ is the concentration in dimensions of [(amount of substance) length−3]t is time· is the "dot product"▼ is the del or gradient operatorD is is the diffusion coefficient in dimensions of [length2 time−1]Note that when φ is at steady state, this equation reduces to Fick's first law.
