1.DMSO, is a chemical that passes through cell membrane isotonic cream to which
ID: 3519058 • Letter: 1
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1.DMSO, is a chemical that passes through cell membrane isotonic cream to which a high the treatment is questionable Japplication of such a cream is likely to result which of the DMSO will not enter the body and draw water out of the body by osmosis concentration of DMSO have been added are sometimes applied to joint injury. (The value of following? DMSO will not enter the body and water will not be drawn out of the body by osmosis DSMO will enter the body by diffusion DSMO will enter the body by osmosis 2.when soaking in a body of fresh water for an extended period. the thick skin, say of palms of the hands or bottom of the feet will become wrinkled in appearance when the fresh water the water will move by osmosis on the thick skin increased the surface area and give if the characteristic wrinkled appearance.which of the following would explain why when thick skin is exposed to salt water (high sodium level Jsuch as in the ocean the skin become tight and not wrinkled? . The water is entering the thick skin by osmosis The water is leaving the thick skin by diffusion The sodium is entering the thick skin by diffusion The sodium is leaving the thick skin by diffusion 3.Damaged glomeruli will sometimes filter some large protein which are ultimately excreted in the urine, these proteins are usually not filtered. How will this aberrant filtration of proteins More water will be retained because of the higher than usual tubular osmolarity More water will be excreted because of the higher than usual tubular osmolarity More water will be excreted because of the lower than usual tubular osmolarity affect renal function used your knowledge of diffusion and osmosis . More water will be retained because of the lower than the usual tubular osmolarityExplanation / Answer
Answer 1:- Option C – DMSO enters the cell by diffusion.
Explanation:- DMSO (dimethylsufoxide) enters the cells and acts as cryoprotectant. To enter the cell, DMSO modulates the cell membrane by forming a pore. DMSO is an n effective penetration enhancer, cell fusogen, and cryoprotectant. The mechanism of modulation of cell membrane depends on concentration of DMSO. At low concentrations, DMSO induces membrane thinning and increases fluidity of the membrane's hydrophobic core. At higher concentrations, DMSO induces transient water pores into the membrane. Still higher concentration involve desorption of individual lipid molecules from the membrane followed by disintegration of the bilayer structure.
Answer 2:- Option B – Water leaves from the thick skin by diffusion.
Explanation:- When fingers are placed in freshwater, they appear wrinkled. The wrinkling is the effect of constriction of blood vessels below the skin to avoid excess entry of water into the fingers. The wrinkling does not occur when fingers are in salt water. This is because the water from the body tries to move out by diffusion, as the salt concentration is higher in outside water. The blood vessels beneath the skin dilate and thus prevent wrinkling.
Answer 3:- Option D –More water will be excreted because of the lower than usual tubular osmolarity
Explanation:- As more protein is filtered and passed through urine, the water is also excreted in excess to maintain the osmolarity. The tubular osmolarity drops as more and more protein is filtered off. Thus, to maintain the osmolarity, proportional amount of water to the excreted protein is also excreted.
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