Which of the following is a characteristic that all prokaryotic and eukaryotic cells share?
use of chloroplast to create food.
use of mitochondria to obtain energy.
presence of a cell wall to maintain osmotic pressure.
presence of dna to store heredity information.

The graph represents the gravitational attraction between two equal masses vs. their distance apart, which statement best describes the information presented by the graph? a) distance is only a factor in space, not on earth. b) gravitational attraction is directly proportional to distance. c) gravitational attraction is inversely proportional to distance. d) gravitational attraction is not related to the distance between objects.

Aperson who uses a computer at a desk does not have to worry about safety in the workplace. true or false

Ras is a g-protein that is activated when a growth factor attaches to egfr. its activation results in the replacement of a gdp molecule with a gtp molecule, thus allowing a signal transduction pathway to be activated. considering the signal pathway illustrated on this page, what is one potential outcome of a mutation in the ras gene that leads to ras protein hyperactivity. be specific.