Ap Biology Lab 1 Report Essays

Ap Biology Lab 1 Report Essays Ap Biology Lab 1 Report Essay Ap Biology Lab 1 Report Essay Lab 1 Diffusion, Osmosis, and Water Potential of Glucose Problem: What effects will glucose have on diffusion, osmosis, and water potential? Background: All living things have certain requirements they must satisfy in order to remain alive. These include exchanging gases (usually CO2 and O2), taking in water, minerals, and food, and eliminating wastes. These tasks ultimately occur at the cellular level, and require that molecules move through the membrane that surrounds the cell. There are two ways that the molecules move through the membrane: passive transport and active transport. Diffusion is the movement of molecules from a region in which they are highly concentrated to a region in which they are less concentrated. Diffusion occurs when a system is not at equilibrium. Several factors affect how fast a molecule will diffuse. The first of these is the kinetic energy of the molecule, which is most frequently measured as the temperature of the system. The size of the molecule also affects how rapidly it will diffuse. Diffusion can occur through a cell membrane. The membrane allows small molecules like water (H2O), oxygen (O2), carbon dioxide (CO2), and others to pass through easily. It is said to be permeable to these molecules. Osmosis is a special case of diffusion. In this case, a large molecule like starch, is dissolved in water. The starch molecule is too large to pass through the cell membrane, so it cannot diffuse from one side of the membrane to the other. The water molecules can, and do, pass through the membrane. Hence, the membrane is said to be semi-permeable, since it allows some molecules to pass through but not others. However, on the side of the membrane with the starch, the starch molecules interfere with the movement of the water molecules, preventing them from leaving as rapidly as they enter. Thus, more water flows into the side with the starch than flows out, and the starch gets diluted. If the starch is in a cell, the water moves into the cell faster than it leaves, and the cell swells. The cell membrane acts somewhat like a balloon, and if too much water enters the cell, the cell can burst, which kills the cell. So cells usually have some kind of mechanism for preventing too much water from entering or pumping the water out or simply making a tough outer coat that will not rupture. Data and Observations: ? ? ? Results and Discussion: Given the information recorded, it seems that the more sucrose is present the more water is taken away from the cell. That is when it comes to the potato. When only a dialysis bag is present however, the more sucrose, the more water that is taken in. References: Reece, Jane. Campbell, Neil. Biology Seventh Edition. San Francisco: Pearson, 2005 biologycorner. com/bio1/diffusion. html# http://hyperphysics. phyastr. gsu. edu/hbase/Kinetic/diffus. htm l

Quotes From William Shakespeares Romeo and Juliet

Quotes From William Shakespeares Romeo and Juliet Romeo and Juliet,  one of Shakespeares iconic tragedies,  is a play about star-crossed lovers, their romance doomed from the start. It is one of the most famous plays of the English Renaissance, consistently taught and staged at high schools and colleges. As their families feud to the death, Romeo and Juliet, the two young lovers, are caught between disparate worlds. The unforgettable play is filled with fights, secret marriages, and untimely deaths–along with some of Shakespeares most famous lines. Love and Passion The romance of Romeo and Juliet is perhaps the most famous in all of literature. The young lovers, despite their families objections, will do anything to be together, even if they must meet in secret. During their private rendezvous, the characters give voice to some of Shakespeares most romantic speeches. What sadness lengthens Romeos hours? / Not having that, which, having, makes them short. / In love? / Out / Of love? Out of her favor, where I am in love. [Act 1, Scene 1] One fairer than my love? The all-seeing sun / Neer  saw her match since first the world begun. [Act 1, Scene 2] Did my heart love till now? Forswear it, sight! / For I neer saw true beauty till this night. [Act 1, Scene 5] My bounty is as boundless as the sea / My love as deep; the more I give to thee, / The more I have, for both are infinite. [Act 2, Scene 2] Good Night, Good night! Parting is such sweet sorrow, that I shall say good night till it  be  morrow. [Act 2, Scene 2] See, how she leans her cheek upon her hand! /  O that I  were  a glove upon that hand, /  that I might touch that cheek! [Act 2, Scene 2] These violent delights have violent ends / And in their triumph die, like fire and powder, / Which as they kiss consume. [Act 2, Scene 3] Family and Loyalty Shakespeares young lovers come from two families–the Montagues and the Capulets–that are sworn enemies of each other. The clans  have kept alive their ancient grudge for years. In their love for each other, Romeo and Juliet have each betrayed their family name. Their story shows what happens when this sacred bond is broken. What, drawn, and talk of peace? I hate the word, / As I hate hell, all Montagues, and thee. [Act 1, Scene 1] O Romeo, Romeo! wherefore art thou Romeo? / Deny thy father and refuse thy name. / Or if thou wilt not, be but sworn my love / And Ill no longer be a Capulet. [Act 2, Scene 2] â€Å"Whats in a name? that which we call a rose  /  By any other name would smell as sweet.†Ã‚  [Act 2, Scene 2] A plague o both your houses! [Act 3, Scene 1] Fate From the very beginning of the play, Shakespeare announces Romeo and Juliet as a story of destiny and fate. The young lovers are star-crossed, doomed to ill fortune, and their romance can only end in tragedy. The play unfolds with an inevitability reminiscent of Greek tragedy, as forces in motion slowly crush the young innocents who try to defy them. Two households, both alike in dignity  /  In fair Verona, where we lay our scene  /  From ancient grudge break to new mutiny  /  Where civil blood makes civil hands unclean.  /  From forth the fatal loins of these two foes  /  A pair of star-crossd lovers take their life  /  Whose misadventured piteous overthrows  /  Do with their death bury their parents strife.†Ã‚  [Prologue] This days black fate on more days doth depend: / This but begins the woe others must end. [Act 3, Scene 1] â€Å"Oh, I am fortunes fool!†Ã‚  [Act 3, Scene 1]