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How does diffusion occur most rapidly- with or against the concentration gradient?
Wiki User
∙ 11y ago
Diffusion only occurs down a concentration gradient. Put a drop of food coloring in a glass of water - you will never see the food coloring spontaneously concentrate. It will always spread down the gradient.
Wiki User
∙ 11y ago
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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 glucose enters a cell most rapidly by facilitated diffusion?
it enters most rapidly by facilitated diffusion!!
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.
What is the purpose of adding water in alcohol?
Alcohol is used for rapidly killing bacteria, through cleansing and santification, preventing bacteria from getting into the incision or for drinking purposes
Since cyanide is a poison that limits a cells ability to manufacture ATP a cell containing cyanide is least likely to carry on the process of?
Cellular respiration. More specifically, electron transport chain. Cyanide doesn't just simply limit manufacturing of ATP, it blocks the enzyme cytochrome C oxidase, a crucial enzyme in the electron transport chain. Since ETC is the largest supplier of ATP, the ATP supply in the cell declines 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.
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.
Does glucose enters a cell most rapidly by facilitated diffusion?
it enters most rapidly by facilitated diffusion!!
How cultural diffusion occur?
Televisions and the internet are making cultural diffusion take place more rapidly than ever before. I hope i helped :)
How does cultural diffusion occur?
Cultural diffusion occurs when cultural elements, such as ideas, beliefs, practices, or technologies, spread from one society to another through contact and interaction. This can happen through trade, migration, conquest, or technology transfer. As cultures come into contact with each other, they often adopt and incorporate aspects of one another into their own traditions, leading to a blending and sharing of cultural elements.
What phenomenon is created when lightning suddenly heats the air causing it to expand rapidly?
Diffusion.
Would you expect diffusion to occur more or less rapidly at a higher temperature?
more
Why are fat-soluble toxins more rapidly taken in through diffusion than water soluble poisons?
Fat-soluble toxins are more rapidly taken in through diffusion than water soluble poisons due to their ability for passive transfer. Water soluble poisons do not have this ability.
Why is cultural diffusion occurring more rapidly arround the world today than in previous centuries?
Better transportation
