Which portion of the cell membrane is responsible for preventing unwanted materials from entering the cell?
a. integral protein
b. glycoprotein
c. lipid bilayer
d. cholesterol

Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?

What part of the brain is highlighted in the diagram below?

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from