Why are glass cylinders preferred over plastic cylinders for conducting lab experiments ?
a. they are attractive and light
b. they are cheap and abundant
c. they are heat and chemical resistant

Describe at least 2 abiotic and two biotic factors found in the desert biome how do these abiotic factors interact with the biotic factors

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.

Which is the best example of plant tissue? the answer is d (just took the test)