Abunch of amino acids attached together is called a?

What is the problem in this article? what solution does the article propose?

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.

Will give ! ! widentify the advantages and disadvantages of renewable and nonrenewable energy resources.