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

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.