The stem cells of plants have an unusual tubular structure unlike most other types of plant cells. what function of plant stem cells is related to their shape and structure? a) communication b) photosynthesis c) protection d) transport

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.