Question

1. which of the following best describes the difference between the functions of nucleic acids and enzymes? a. nucleic acids are used as the building blocks of proteins, while enzymes are used as the building blocks of phospholipids. b. nucleic acids contain the genetic code for protein synthesis, while enzymes catalyze chemical reactions. c. nucleic acids inhibit biochemical reactions, while enzymes provide structural support in cells. d. nucleic acids transmit signals that begin biochemical processes, while enzymes convert carbohydrates into lipids and proteins. 4. which of the following properties of water enables a water strider to \walk on water\? a. water expands as it freezes. b. water exhibits cohesive behavior. c. water is an excellent solvent. d. water moderates temperature.

Explanation:

1. For the first question: Nucleic acids (DNA and RNA) carry the genetic information needed for protein synthesis. Enzymes are proteins (or some RNA - molecules) that act as biological catalysts to speed up chemical reactions. Option b correctly describes this difference. Option a is wrong because amino - acids are building blocks of proteins and fatty acids and glycerol are parts of phospholipids. Option c is incorrect as nucleic acids don't inhibit biochemical reactions and enzymes don't provide structural support mainly. Option d is wrong as nucleic acids don't transmit signals to begin biochemical processes in that way and enzymes don't convert carbohydrates into lipids and proteins in that simple sense.
2. For the second question: The cohesive behavior of water, due to hydrogen bonding between water molecules, creates surface tension. This surface tension allows water striders to "walk on water". Water expanding as it freezes, being an excellent solvent, and moderating temperature are other important properties of water but are not related to the water - strider's ability to walk on water.

Answer:

1. b. Nucleic acids contain the genetic code for protein synthesis, while enzymes catalyze chemical reactions.
2. b. Water exhibits cohesive behavior.