What is a component of the plasma membrane that creates a chemical barrier between the inside and the outside of the cell?

Animals such as pronghorn antelope, bison ans badgers dot to the landscape. where are these animals located?

Which of these has happened to your food by the time it reaches your small intestine? a. all the macromolecules have been broken down completely. b. lipids and starches have been partially broken down. c. starches and proteins have been partially broken down. d. proteins and lipids have been broken down into subunits.

What are characteristics of minerals? select 3 choices