For the following elements, show where the electrons are probably located by indicating how many electrons are in the core electrons and how many are in the valence electrons. Phosphorus        Core electrons:      Valence electrons: Scandium           Core electrons:       Valence electrons: Iodine                 Core electrons:            Valence electrons: Mercury             Core electrons:         Valence electrons:  

The element lead was known in Roman times. It is soft and was formed into pipes to carry water to the homes of the Roman upper class. We get the word plumbing from the Latin word for this metal—plumbum. Some have put forth the idea that lead poisoning from the pipes may have affected the ruling class and contributed to the fall of the Roman Empire (this is why you should never eat a Pb and J sandwich). What is the symbol of this element?

Different regions, or blocks, of the periodic table correlate with the electron capacity of s, p, d, and f orbitals. These regions have been sketched on the periodic table below. For each region, enter the type of orbital correlated with it. (Enter only the letter.) See the description for details The image shows a diagram with four labeled regions: I, II, III, and IV. The diagram appears to represent sections of a larger structure, with each labeled region depicted as a separate area within the design.      

Which cell type is the most important for killing tumor cells?

Which monoclonal antibody is used to treat Crohn’s disease?

Which of the following is not associated with cell transformation?

Which drug inhibits mTOR?

Which disease/condition is treated with hyper immune globulin therapy?

What is true of both mitosis and meiosis? Choose both correct answers.

DNA replication synthesizes by joining together . Transcription synthesizes by joining together . Translation synthesizes by joining together .