As liquid water freezes, the molecules arrange themselves in a way that takes up more space than liquid water. what would most likely occur if the arrangement of frozen water molecules required less space than that of liquid water molecules? a.) the density of ice would be greater than the density of liquid water, and ice would not float. b.) ice would form in layers, and liquid water would get trapped in between the layers. c.) liquid water would have a higher specific heat, making it less likely to undergo vaporization. d.) the freezing point of water would decrease, making ice more difficult to form.

1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.