Rate these molecules in terms of permeability (how fast they will pass through a

Question

Rate these molecules in terms of permeability (how fast they will pass through a lipid bilayer).

1-9 (1: fastest molecule to travel past membrane, 9: slowest molecule to travel past membrane, if at all).

CH4
CO2
Sucrose
Aspartate
N2
Ethanol
Glucose
Lactose
dCTP

Explanation / Answer

1. CH4 ---> lightest, smallest, nonpolar 2. N2 ---> light, small, nonpolar 3. Ethanol --> light, small, nonpolar 4. CO2 ---> next lightest, small, and nonpolar 5. G;ucose ---> light and nonpolar but need active transport 6.Sucrose---> large. need active transport. a disaccharide 7.Lactose---> large. need active transport. 8. Aspartate ---> heavy, large. need active trasport. 9. dcTP : heavy, large. need active transport. I hope this helps!! :)

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