How do enzymes make reactions go faster?

they lower activation energy
they raise the activation energy
they supply extra reactants
they limit the amount products in the reaction

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.

Which of the following are the functions of the integumentary system? yadda-yadda, the 1st answer is the brainliest. : )

According to cell theory; which structures carry out the basic function of living things? a. atoms b. organs c. cells b. nuclei