What is it called when you create representations of complex objects or processes

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

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.