8. which of the following pairs accurately connects a macromolecule to its monomer? a. carbohydrates–amino acids b. nucleic acids–nucleotides c. lipids–phosphate groups d. proteins–nitrogenous bases

If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food to eat after only a few days?

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.

What element is able to combine with itself and hydrogen to form large molecules ?