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Tonicity is measured by the impermeable solutes, since they exert the osmotic pressure on the cells; however, in order to have an osmotic pressure, the two solutions must be separated by a semi-permeable membrane, otherwise the two solutions will always have equal concentrations of solutes. Pure water is a solute-free solution; plasma (if referring to that of blood) can have many components. So, in theory, if these two solutions were separated by a semi-permeable membrane, than the water would be very hypotonic as it would have more water than that of the plasma.
To clarify, though, tonicity is USUALLY used to refer to the effect on cells since cells have a cell membrane (semi-permeable membrane) that basically only allows water and some small gases (oxygen, carbon-dioxide) to freely diffuse across it. For example, if red blood cells were placed into a container of pure water, the water would be hypotonic because it's water content is greater than that of the cytosol, and the cells would swell and/or burst. If placed into a solution of 0.9% salt (isotonic) than the surrounding medium is said to be isotonic - the water level remains the same inside and outside the cell.
What else can I help you with?
Why does the filtrate become hypotonic?
The filtrate becomes hypotonic because during filtration in the nephron, water and small solutes are pushed through the glomerular membrane into the renal tubules. This process results in a dilute solution with lower solute concentration compared to the blood plasma.
Is urine always hyper tonic to the blood plasma?
It depends. If the body is dehydrated, it will produce highly concentrated (hypertonic) urine in order to conserve water from the blood stream. If your blood is hypotonic (contains excess water), then the kidneys will release hypotonic urine, to reduce the amount of water in the blood. Therefore, if you are dehydrated, the urine is considered hypertonic to the blood. If not, the urine is hypotonic to the blood.
What is hypotonic urine?
Hypotonic urine refers to urine with a lower concentration of solutes compared to the blood plasma. This means that there is a higher water content in the urine relative to the solute concentration. It can be a result of various conditions affecting the kidneys' ability to concentrate urine effectively.
Is distilled water hypotonic to potato or hypertonic?
Distilled water is hypotonic to potato.
When a cell is in pure water it is in this type of solution?
hypotonic
To which type of solution does water move: hypertonic or hypotonic?
Water moves from a hypotonic solution to a hypertonic solution.
What would be the effect of fluid between plasma and red blood cellsof someone using a hypotonic saline?
A hypotonic infusion will cause (all) the cells to swell. If they swell enough, they burst.
Why is saliva always hypotonic to plasma?
Acinar cells secrete a isotonic mixture of saliva which then gets modified through the ductal cells to produce a hypotonic saliva compared to plasma with a high K+ and HCO3- concentration. HOWEVER, at high flow rates the saliva actually resembles plasma (isotonic) because there wasn't enough to modify the saliva.
When the elodea leaf is placed in a drop of distilled water the location of its plasma membrane?
When an Elodea leaf is placed in a drop of distilled water, the plasma membrane can be observed as a thin line just inside the cell wall. The cell wall provides structural support, while the plasma membrane regulates the movement of substances in and out of the cell. In a hypotonic environment like distilled water, water enters the cell, causing it to swell and the plasma membrane to press against the cell wall. This can make the plasma membrane more visually distinct under a microscope.
Does Water move into or out of a membrane bound hypotonic vesicle?
Water moves into a membrane-bound hypotonic vesicle through the process of osmosis. In a hypotonic solution, the concentration of solutes outside the vesicle is lower than inside, causing water to flow into the vesicle to balance the concentration gradient.
is water hypotonic?
yes it is hypotonic to normal water. for more info, see is distilled water hypotonic or hypertonic.
What cell is full of water?
hypotonic
