What is one feature all receptor proteins must share?

humans are now responsible for causing changes in the environment that hurt animals and plant species. we take up more space on earth for our homes and cities. we pollute habitats. human activity often changes or destroys the habitats that plants and animals need to survive.

if you look up in the top right corner you'll see your current profile picture, click than click "view profile" you'll be able to change it there.

the correct answer to this question is #5