The medulla oblong at a controls the contraction and relaxation of the blank ,causing the lungs to inflate and deflate during breathing

Consider this plant cell which organelle is labeled g

What's the waste product of electrons and pyruvate combining in fermentation?  

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.