Which parasite is likely affecting Sheila’s sheep in the following scenario? Shelia’s sheep has not been herself lately. Usually high-spirited, the sheep has been sluggish and mopey. Sheila noticed that she has been drinking more than usual and has lost quite a bit of weight.
A)liver flukes
B)tapeworms
C)roundworms
D)stomach worms

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.