In both plant and animals cells, the cell membrane 1. produces enzymes 2. controls reproduction 3. is composed of sugars 4. regulates diffusion

The cell membrane is in control of what materials go in and out of the cell so the correct answer is 4. Regulates diffusion.
Hope I helped!

Many archeologists and anthropologists disagree with dr. thorne's view.  thorne strongly believes that what many calls "homo erectus"  was in fact  homo sapiens,  and that they migrated out of africa almost 2 million years ago and dispersed throughout europe and asia. that's way different  from what scientists have always believed about the evolution of the species.