TEST THE FIRST:

1. TEST THE FIRST: The Art of Science, Microscopy, and Biochemistry "What we want is to see the child in pursuit of knowledge and not knowledge in pursuit of the child.“ George Bernard Shaw "Would a child who spent every day doing basketball drills without ever having the joy of playing a game of basketball enjoy basketball enough to become good at it?“ Lalia Kerr "Testing improves education the same way that bombing promotes democracy“ Steve Cohn, Education professor at Tufts University Thursday, October 5th, 2006

2. Name ___________________________________________ Date ________________ Period __________ H H H H O O Directions: This test is designed to let your teacher know how much information you have learned over the past few weeks, and to allow you to gauge this as well. Remember to think about your notes, and all the examples and demonstrations that we’ve done in class. Read each question carefully and completely before making your response, and make sure that whatever you write answers every part of the question. Do not leave any blank questions or naked numbers. Relax, good luck, and enjoy! 0. What pet should we get as a class, and what should we name it? 1. What is the main purpose of a carbohydrate? A. Quick Energy B. Insulation C. Weight D. Information _________ 2. What is the only molecule that we’ve studied that contains phosphorous? A. Lipid B. Amino Acid C. Nucleotide D. Proline _________ 3. What is the process used to hook together monomers into a polymer? A. Exothermic reaction B. Condensation Synthesis C. Glycolysis D. Hemisolvent _________ 4. In the space below, draw a hydrogen bond in the appropriate place. 5. With what other atoms might hydrogen form a hydrogen bond? 6. If Sir Henry Florence-St. Claire’s microscope has an eyepiece with 10x magnification, and a high power objective of 43x, what is the total magnification of his ‘scope under high power? Show how you got your answer in the space below. 7. An ionic bond is the strongest chemical bond. What does it involve? A. Sharing electrons between three atoms to increase the strength. B. Swapping electrons with other atoms C. Completely transferring electrons from one atom to another. D. Moving protons to create a positive charge. _________

3. 8. Boron is element number five on the periodic table, so it’s atomic number is five. How many protons does boron have? 9. How many electrons does boron have in its first shell? How many does it have in its second? 10. How many more electrons does boron need to have a full valence shell of electrons? For questions 11 through 16, place a check under “GS” if the item is good science, and put one under “BS” if the item is bad science. 11. Having expectations about the result _________ _________ 12. Having many variables _________ _________ 13. Having many repetitions _________ _________ 14. Consulting a dependable expert _________ _________ 15. Using correlations to prove a conclusion _________ _________ 16. Publishing your results so others can critique them _________ _________ 17. What is one thing that you should NEVER use while viewing a slide under high power? 18. Which row contains a correct pairing of a macromolecule and its building blocks? Row Building Blocks Macromolecule A glucose molecules DNA B simple sugars lipid C amino acids protein D nucleotides starch _________ 19. Carlos has a molecular model kit. He wants to join together many glucose molecules, but can’t remember what he can call the finished product. What is a string of glucoses called? A. Polysaccharide B. Largo e piu dolce C. Triglyceride D. Protein _________ GS BS

4. 20. If a reaction releases energy, it is called A. Excommunicated B. Exothermic C. Excited D. Wasteful _________ 21. In the space below, draw an atom of carbon. Carbon’s atomic number is 6. Include electrons, protons, and neutrons, as well as the appropriate electron shells. 22. What is the most common solvent in the human body? 23. A characteristic of a DNA molecule that is not characteristic of a protein molecule is that the DNA molecule: A. is made of nucleotides B. can be very large C. is found in nuclei D. is composed of subunits _________ 24. The molecule below is most likely A. A nucleic acid B. A lipid C. A protein D. A carbohydrate _________ 25. What is the molecule pictured above? A. Nucleic acid B. Lipid C. Protein D. Carbohydrate _________ 26. Researchers performing a well-designed experiment should base their conclusions on A. the hypothesis of the experiment B. data from repeated trials of the experiment C. a small sample size to insure a reliable outcome of the experiment D. results predicted before performing the experiment _________

5. 27. Describe how a polymer can be formed from monomers. You may write, draw, or both. 28. Sally measured the pH of the water from her faucet, and finds that it is 3. Why should this worry her? 29. Sally brings a small sample of the water into her bio class for some tests. What could her teacher add to the water to make sure that the pH of the sample does not change during the tests? 30. In plants, monosaccharides are least likely to be A. linked together to form proteins B. broken down into carbon dioxide and water C. used as a source of energy D. stored in the form of starch molecules _________ 31. In the space below, using one or more complete and well-structured paragraphs, explain why oil and water will not readily combine. Also explain why the addition of a detergent such as soap will allow the two to mix. Because you know that cell membranes are made out of lipids and are surrounded by water, make a hypothesis about what would happen if soap was added to a cell membrane. You may wish to include some of the following terms in your response: Polar Non-polar Amphipathic Soap