One of the governing laws of the universe is the thermodynamic law of entropy. Which choice best describes entropy? A. Particles and energy in a system become more and more disordered.

B. Energy is consumed in a chemical reaction.

C. Heat is evenly distributed throughout the universe.

D. More bonds are broken in a chemical reaction than bonds are formed.

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.