Read the following passage; then answer the question that follows. … At Tenochtitlán, the Aztecs perfected an unusual method of farming. They built huge rafts, covered them with earth, and floated them on the lake. On these chinampas, or “floating islands,” they grew enough maize and vegetables to feed their expanding population comfortably. Eventually, roots from the tree rafts attached themselves to the bottom of the shallow lake to become permanent foundations for buildings.… — Lois Athey Which conclusion is best supported by the information in this passage?

American writer Henry David Thoreau wrote that if a law “requires you to be the agent of injustice to another, then I say, break the law.”  What idea is Thoreau supporting?

Read the excerpt below from an article by C. V. Wedgwood; then answer the question that follows. The major changes in historical interpretation do not, as the layman often imagines, arise from the discovery of new evidence. . . . hat is most likely to happen is that the historian will find what he is looking for, namely, the documents which will explain and illustrate his own point of view. . . . It is his job as a scholar to form as exact an idea of past events as he can from the surviving evidence. But the instrument with which he looks at the past is modern. . . . It is his own mind. And however much he bends his thoughts toward the past, his own way of thinking, his outlook, his opinions are the products of the time in which he lives. The author’s observations in the excerpt above best support which of the following generalizations about the writing of history?

The #38 arrow is pointing to which structure? IMG_2828.JPG

Which of the following RNA’s is most important for enzymatic (chemical) modification of rRNAs?

Alternative splicing is dependent on_________.

  In the above figure from the genome browser, the black square object in the red circle represents a(n)_________.

In this reaction identify the conjugate acid/ base pairs:    H2CO3  + H2O  —– HCO3-  + H3O+

What would the pH of a .01M HCl solution be?

What would the pH of a .01 M solution of the base trimethylamine (CH3)3N to be? (Kb=6.4*10-5)