Reducing some factors will make the cell surface membrane more fluid. Which pair of factors, if decreased, would increase the fluidity of the cell surface membrane?
- Adistance between phospholipid molecules; proportion of short fatty acid chains
- Bdistance between phospholipid molecules; temperature
- Cproportion of phospholipids with saturated fatty acid chains; proportion of long fatty acid chains
- Dproportion of phospholipids with unsaturated fatty acid chains; temperature