Which process do heterotrophic organisms use to release energy?

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.

In general, characteristics that an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?

Which term specifically refers to an area of the body between a medial and lateral structure