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The substance that can diffuse through cellophane is typically small, nonpolar molecules or water. For example, water can pass through cellophane membranes due to its small size and polar nature, while larger molecules like glucose or starch generally cannot. The permeability of cellophane depends on the size and polarity of the molecules involved.
What else can I help you with?
If a substance is able to diffuse across a membrane then the membrane is said to be what?
selectively permeable
What characteristics is more likely to make a substance diffuse through the cell membrane?
Size. Actually very few substances are able to diffuse across the menbrane, most must be transported ie facilitated diffusion, active transport, or receptor-mediated endocytosis. Carbon dioxide, oxygen, water, and some lipid substances are able to diffuse across the membrane
Why urea is not able to diffuse through 20 mwco?
Urea has a molecular weight lower than 20 MWCO, so it should be able to diffuse through a 20 MWCO membrane. If urea is not able to diffuse through a 20 MWCO membrane, it may be due to factors like the membrane being damaged or having a different pore size than expected, or the presence of additional physical or chemical barriers that prevent urea diffusion.
Infer the relationship between rate diffusion and molecular mass of a substance?
The rate of diffusion is inversely proportional to the molecular mass of a substance. Generally, smaller molecules diffuse faster than larger ones because they are able to move more easily through a medium due to their lighter weight. Conversely, larger molecules diffuse slower because they collide more frequently with other molecules and require more energy to move.
How does lipid solubility affect the ability of substances entering a cell?
Lipid-soluble substances can easily pass through the cell membrane due to the presence of phospholipids that make up the membrane. These substances can dissolve in the lipid bilayer and diffuse through it, allowing them to enter the cell more readily. In contrast, substances that are not lipid-soluble may require specific transport mechanisms to facilitate their entry into the cell.
What is the membrane said to be if a substance is able to diffuse across a membrane?
selectively permeable
If a substance is able to diffuse across a membrane then the membrane is said to be what?
selectively permeable
What characteristics is more likely to make a substance diffuse through the cell membrane?
Size. Actually very few substances are able to diffuse across the menbrane, most must be transported ie facilitated diffusion, active transport, or receptor-mediated endocytosis. Carbon dioxide, oxygen, water, and some lipid substances are able to diffuse across the membrane
Why urea is not able to diffuse through 20 mwco?
Urea has a molecular weight lower than 20 MWCO, so it should be able to diffuse through a 20 MWCO membrane. If urea is not able to diffuse through a 20 MWCO membrane, it may be due to factors like the membrane being damaged or having a different pore size than expected, or the presence of additional physical or chemical barriers that prevent urea diffusion.
What particles can diffuse directly through the lipid bi-layer?
As the bilayer contains hydrophobic fatty acid tails, water-soluble molecules cannot diffuse directly through. However, lipid soluble molecules such as oxygen can diffuse directly through. Overall, for a molecule to be able to diffuse directly through it must be lipid-soluble, relatively small and non-polar.
Are solutes always able to diffuse through a cell's selective permeable membrane?
No, solutes are not always able to diffuse through a cell's selectively permeable membrane. The ability for solutes to diffuse across a membrane depends on the size, charge, and concentration gradient of the solute. Larger or charged molecules may require the assistance of specialized transport proteins to cross the membrane.
Can Iodine Potassium Iodine when mixed with a starch diffuse through a semipermeable membrane?
No, iodine potassium iodide mixed with starch cannot diffuse through a semipermeable membrane because the starch molecules are too large to pass through the pores of the membrane. Only smaller molecules like iodine will be able to pass through.
Steroid hormones don't need binding receptors why?
Steroid hormones are lipids so are able to diffuse through the membrane without receptors.
Infer the relationship between rate diffusion and molecular mass of a substance?
The rate of diffusion is inversely proportional to the molecular mass of a substance. Generally, smaller molecules diffuse faster than larger ones because they are able to move more easily through a medium due to their lighter weight. Conversely, larger molecules diffuse slower because they collide more frequently with other molecules and require more energy to move.
Why do certain smells spread through the air faster than others?
Well, it depends on the heat of the air and how much air there is. Smells spread though the air during the process of diffusion, which happens faster if the air is hotter(the particles of the air will move faster if hotter and therefore the substance will diffuse quicker). Also they will spread faster if there is more air, which means more particles being able to diffuse the substance. I hope that this helps. As you can see, I an an a* student in chemistry! Please feel free to correct and extend if needed.
How do you fuse cellophane to wire for making fairy wings?
Try the web site Faerie Muse. There are instructions on how to make cellophane faerie wings. You may find your answer here. Or, type in where to buy cellophane wings and search. I was able to find a couple of web sites that explained how to make cellophane wings. Also, on youtube there is a gal making these type of wings and she has I think 6 different parts....because it took her a few tries to figure out how to get cellophane to adhere. Hope this helps. B
What molecule is able to easily diffuse across the cell's membrane?
Carbon dioxide, oxygen and some nonpolar molecules diffuse easily.
