Dialysis tubing is a selectively permeable membrane that can be filled with a solution to simulate a cell-- assume only water can move in or out of the cell. A piece of dialysis tubing has been filled with a cloudy white solution of 5 percent egg protein dissolved in water to simulate a cell. This simulated cell is weighed and then placed in a beaker of water. After soaking in the water for one hour, the simulated cell is once again weighed. Where is the hypotonic solution? water beaker O simulated cell O neither, both environments are isotonic

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hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

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