An e. coli culture that has been growing at 37°c is moved to 25°c. which of the following changes must be made in its plasma membrane? a. the viscosity must increase. b. the number of saturated chains must increase. c. the number of phosphate groups must increase. d. the number of unsaturated chains must increase. e. no changes are necessary.

the plasma membrane are cell membrane wouldn't really be effected while 37 degrees Celsius is the most optimal temperature for an E.coli culture it shouldn't/wouldn't die at 25 degrees Celsius.

so I believe no changes are necessary.

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high