A phospholipid bilayer. Lipid molecules are arranged so that their heads point outward and their tails point to the center of the membrane. Embedded in the phospholipid bilayer are the following structures. A: A long branched chain of molecules attached to a lipid in the membrane. B: A large structure that spans the entire membrane with a hollow channel in the middle. C: A long branched chain of molecules attached to a protein. D: A protein with a long branched chain of molecules attached to it.

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation:

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;