Adding sodium to chlorine gas will produce table salt. the formation of a new substance shows that change occurred. a. a physical b. a chemical c. both a physical and chemical d. neither a physical nor a chemical

in 1972 the fluid—mosaic membrane model of membrane structure was proposed based on thermodynamic principals of organization of membrane lipids and proteins and available evidence of asymmetry and lateral mobility within the membrane matrix [s. j. singer and g. l. nicolson, science 175 (1972) 720–731].