Proteins do not pass through plasma membranes because of what?

Which one of the following reasons is not typically why athletes strive for lower body weight and lower body fat?

Although animals share many common characteristics, there is also a great amount of diversity found in animals. which animals are ectothermic, obtain dissolved oxygen in water through gills, have scales, have fins, and live in water?

Which of these is an example of how the media might perpetuate a sexual stereotype? a) a lesbian couple is shown adopting and caring for a child. b) a lesbian is depicted as masculine. c) a male homosexual is depicted as masculine. d) a homosexual relationship is shown to be commited and monogamous.