What 3 interactions does the endocrine system rely on?

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer

Number and variety of living organism; includes genetic, species, and ecological types

A(n) is a molecule influences the way that a molecule reacts.