How do you define homeostasis?

1) actively changing due to an environmental stimulus.

2) taking “raw” materials in turning it into a usable energy.

3) the ability to increase in a size complexity.

4) regulation of bodily functions to stay within a certain range.

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

The chemical form of energy that is useable by the cell to do work

Reactants undergo chemical reaction to form products. this chemical equation represents one such reaction. the coefficient for one of the reactants or products is incorrect. which part of the chemical equation is incorrect?