Which statements describe disadvantages of using natural gas as an energy source? check all that apply. it is expensive to use. it is hard to stop using. it is a nonrenewable resource. it is damaging to the environment. it is scarce in some parts of the world.

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

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

Which material is commonly used as a culture medium for living cells