Which of these statements about the composition of biological membranes is not correct?
a. the composition of lipids and proteins differs between different species and in different types of cells in a single organism
b. the two leaflets of a membrane bilayer have different lipids and compositions
c. the cell membranes and mitochondrial membranes of vertebrate animals have different lipid compositions.
d. when phosphatidylinositol is on te outer monolayer of the cell membrane bilayer, it marks the cell for destructions.
e. the flip-flop movement of lipids is required to generate the transbilayer asymmetry in lipid composition

Where does all the water go? according to the environmental protection agency (epa), in a typical wetland environment, 39% of the water is outflow; 46% is seepage; 7% evaporates; and 8% remains as water volume in the ecosystem (reference: united states environmental protection agency case studies report 832-r-93-005). chloride compounds as residuals from residential areas are a problem for wetlands. suppose that in a particular wetland environment the following concentrations (mg/l) of chloride compounds were found: outflow, 60.4; seepage, 73.7; remaining due to evaporation, 26.4; in the water volume, 46.8. (a) compute the weighted average of chlorine compound concentration (mg/l) for this ecological system. (round your answer to one decimal place.) mg/l (b) suppose the epa has established an average chlorine compound concentration target of no more than 58 mg/l. does this wetlands system meet the target standard for chlorine compound concentration? yes. the average chlorine compound concentration (mg/l) is too high. yes. the average chlorine compound concentration (mg/l) is lower than the target. no. the average chlorine compound concentration (mg/l) is lower than the target. no. the average chlorine compound concentration (mg/l) is too high.