What best explains the relationship between structure and function of the cell membrane? (2 points) the single layer membrane surrounding the outside of the cell allows for the easy removal of waste. the lipids and proteins that make up the membrane allow it to be selective about what enters and leaves the cell. the fluid inside the membrane buffers the chemical reactions taking place inside the cell. the lipids forming the membrane provide energy for protein synthesis.

Asample of digestive juice was removed from the stomach of a pig. the juice was placed in a test tube along with some grains of wheat. a second test tube was set up containing an equal number of wheat grains, with distilled water rather than digestive juice. the test tubes were kept for 8 hours at 40 degrees c. after 8 hours, the grains inside the digestive juice had broken into tiny particles. the grains of wheat, in the water, were wet but otherwise unchanged. what is the control group?