Why do phospholipids form a bilayer in water?
a. the phosphate portions repel each other
b. the hydrophilic and hydrophobic parts attract each other.
c. the phosphate portions attract water, and the lipid portions repel water.
d. the lipid portions attract water, and the phosphate portions repel water

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Which actions would increase the rate at salt dissolves in water? stir the water? crush the salt? use less water? heat the water? cool the salt

Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.