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Just about the only very, very large area in our Universe where the above conditions could be met is Interstellar Space, as long as the masses of gas and the clouds of dust can be avoided.
If Space is defined as all of the water in Earth's Oceans, within given layers molecular concentrations are relatively constant.
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What happens in a cell transportation lab report?
When a cell membrane is said to be selectively permeable, it means that the cell membrane controls what substances pass in and out through the membrane. This characteristic of cell membranes plays a great role in passive transport. Passive transport is the movement of substances across the cell membrane without any input of energy by the cell. The energy for passive transport comes entirely from kinetic energy that the molecules have. The simplest type of passive transport is diffusion, which is the movement of molecules from an area of high concentration to an area of lower concentration. Diffusion moves down the concentration gradient, which is the difference in the concentration of molecules across a space. Osmosis is a type of diffusion in which water molecules move down the concentration gradient. When the concentration of solute molecules outside the cell is lower than the concentration of solute in the cytosol , the solution outside is hypotonic to the cytosol. If the concentration of solute molecules is higher outside of the cell, the solution outside is said to be hypertonic. The solution outside is isotonic if the concentration is equal on both sides of the cell membrane.
Why cant big molecules pass through wall guts?
The cell walls of the intestinal cells do not allow the passage of large molecules through them; in addition, the tight junctions between the cells blocks the transfer of large molecules through the interstitial space.
What are factors on which rate of diffusion depends?
Diffusion depends on where the higher and lower concentrations of solutes are (molecules move from high to low concentration), what kind of membrane (if any) the molecules are moving through, and in many cases how large and charged the molecules are.
How does the diffusion of food dye in water?
Dye spreads in water via a process called diffusion. Diffusion occurs in fluids (gases or liquids) and it involves particles moving from a high concentration to a low concentration. So in this context the dye is dropped in and spreads from the high concentration (where the dye was dropped in) to the rest of the water as it has a low or nil concentration of the dye in question. This happens until equilibrium where there is an equal concentration throughout the water. That is why it appear to dilute the dye as the final concentration is actually less than that of the original dye as it has spread out. Therefore this effect will be more pronounced in larger bodies of water as it spread through a larger amount of space so it spread out more and therefore less concentrated.
What is the physical difference in the number of molecules between two regions of space A.concentration gradient B.plasma membrane C. receptor proteins D. phospholipid layer?
Concentration gradient.
What is cell diffusion?
One way that substances enter a cell is through diffusion. Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration. When the molecules are even throughout a space it is called equilibrium.
How does diffusion show that molecules are always moving?
How? Molecules move from an area of higher concentration to an area of lower concentration. When the concentration decreases (be it determines by a measure of pressure) in a unit volume; that indicates there are less molecules occupying that given space. So they must have gone somewhere...
What happens in a cell transportation lab report?
When a cell membrane is said to be selectively permeable, it means that the cell membrane controls what substances pass in and out through the membrane. This characteristic of cell membranes plays a great role in passive transport. Passive transport is the movement of substances across the cell membrane without any input of energy by the cell. The energy for passive transport comes entirely from kinetic energy that the molecules have. The simplest type of passive transport is diffusion, which is the movement of molecules from an area of high concentration to an area of lower concentration. Diffusion moves down the concentration gradient, which is the difference in the concentration of molecules across a space. Osmosis is a type of diffusion in which water molecules move down the concentration gradient. When the concentration of solute molecules outside the cell is lower than the concentration of solute in the cytosol , the solution outside is hypotonic to the cytosol. If the concentration of solute molecules is higher outside of the cell, the solution outside is said to be hypertonic. The solution outside is isotonic if the concentration is equal on both sides of the cell membrane.
What condition does diffusion eventually lead in the absence of the other influences?
equilibrium because the concentration of molecules will be the same throughout the space the molecules occupy.
Why does sound travel through the air?
Sounds vibrate the air molecules, when the vibrating molecules reach your ear, you ear the sound, there are no molecules in space, thus no sound in space
How does charge affect diffusion?
A concentration gradient is a difference in concentration across a space. It affects diffusion and osmosis because both of these passive transports move down their concentration gradients, or from an area of high concentration to low concentration.
Describe the equilibrium potential of an element?
Is a condition in which the concentration of a substance is equal throughout a space.
What state does diffusion eventually lead to?
Well if the diffusion is not interrupted by other influences it would be equilibrium because the concentration of molecules will be the same throughout the space the molecules occupy.
Why sound canot travel in space?
In order for sound to travel, there has to be something with molecules for it t travel through. On Earth, sound travels by vibrating air molecules, there are no molecules in space, nothing to vibrate
Why cannot sound travel through space?
Because there are no enough molecules in empty space for sound to be propagated.
You can travel where there are no molecules but never through a brick you can travel through space but never around a corner what are you?
light
How do you get oxygen to a space station?
They have oxygen generators with catalysts that change the chemical structure of the air molecules that pass through them , converting carbon molecules into oxygen ; that's how the get oxygen to a space station...
