if the cytoplasm of a cell is a 1% salt solution, a salt solution will be hypertonic to it, a solution will be isotonic to it, and a solution will be hypertonic to it.

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.

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.

Which heredity condition causes a buildup of mucus in lungs and pancreas? a. cystic fibrosis b. heart disease c. huntington's disease d. sickle cell anemia