Select the events that are a consequence of activating mutations in the ras gene. The ras proto-oncogene is converted into an oncogene. Specific transcription factors are activated by phosphorylation. The signal transduction cascade of the MAP kinases is repressed. Abnormally rapid cell growth and proliferation is induced. Malignant transformation of normal cells is inhibited.

Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria

During convection, less dense fluid rises and denser fluid sinks.

Subduction zones form when an oceanic plate collides with another oceanic plate or continental plate. the continental crust is lighter and less dense than oceanic crust. continental crust's density is approximately 2.7 grams per cubic centimeter. oceanic crust is thinner and the average density is about 3.3 cubic centimeters. when the two crustal plates converge the oceanic plate always bends and subducts beneath a continental plate. once the oceanic crust subjects, the rocks are subjected to changes in heat and pressure. because of this, we would expect to find rocks in the area of a subduction. a) clastic b) igneous c) metamorphic d) sedimentary