botulism and myasthenia gravis are conditions that cause muscle weakness. which of these statements is not true?

Although the two theories differ on the evolutionary path of dinosaurs, they agree that

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.

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.