Old classification systems based on physical characteristics would most likely disagree with the relationship between which two animals in the tree? crocodiles and insects bats and humans birds and bats humans and crocodiles

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer