Read the following passage, and then respond to the questions. (1)The brain consolidates learning during two particular phases of sleep. (2)According to Dr. Robert Stickgold of Harvard University Medical School, who conducted a series of tests involving visual tasks, the brain seems to need lots of slow-wave sleep and a good chunk of another kind of sleep, Rapid Eye Movement, or REM. (3)Dr. Stickgold hypothesizes that the reason the brain needs these particular kinds of sleep is that certain brain chemicals plummet during the first part of the night, and information flows out of the hippocampus (the memory region) and into the cortex. (4)He thinks the brain then distributes the new information into appropriate networks and categories. (5)Inside the brain, proteins strengthen the connections between nerve cells consolidating the new skills learned the day before. (6)Then later, during REM, the brain re-enacts the lessons from the previous day and solidifies the newly-made connections through the memory banks. Works Cited Spinks, Sarah. “From Zzzz’s to A’s – Adolescents and Sleep.” “ Inside the Teenage Mind.”  Frontline. (c1995-2011 WGBH Educational Foundation).  Web. 8-14-11. The central idea of the passage is:

A symbolic boundary that inhibited contact with the democracies of Western Europe was the _______________.

glucose + glucose —> _____ by _____.   

Which of the following clues would tell you if a cell is prokaryotic or eukaryotic?

Jackson separates the character of Tessie by:

Which molecule is less soluble in water–a fat or a phospholipid? Why?

The Spanish colonies in North America failed, in part, because

The term insoluble fiber on food packages refers to which of the following molecules?

In the seventeenth- and eighteenth-century American colonies, how did indentured servitude and race-based slavery evolve in relation to each other?

If a paragraph is over a page long, the writer should consider dividing that paragraph in a logical place within the paragraph.