D. glycerol and fatty acids 4. Which is an example of an inorganic compound?

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1 Name: ate: 1. Glucose and maltose are classified as organic compounds because they are both 3. Which process is most directly responsible for the production of O 2 in these sugar solutions?. carbon-containing substances. composed of simple elements. waste products. artificial sugars. respiration. transpiration. translocation. photosynthesis 2. Which substances are most commonly used as building blocks in the synthesis of some lipids?. sugars and starches. amino acids and nucleotides. starches and enzymes. glycerol and fatty acids 4. Which is an example of an inorganic compound?. glucose. maltase. water. starch page 1

2 5. biochemical compound that readily combines with oxygen and distributes it throughout the human body is 9. The diagram shows some of the events that take place in a plant cell. Use the diagram to answer the following question(s).. urea. water. acetylcholine. hemoglobin 6. Which term best describes a solution with a ph of 5?. acidic. neutral. basic. colorless The letters X, Y, and Z most likely represent. N 2, 0 2, and H 2 O. O 2, light, and H 2 O. light, ammonia, and H 2 O. light, O 2, and methane 7. Which is an example of an organic substance?. 6 H 12 O 6. NH 3. H 2 O. O The results of an experiment to determine the chemical composition of the cytoplasm of organism X are summarized in the data table. What percentage of the cytoplasm is composed of organic material? ata Table 8. Which elements are present in all organic compounds?. hydrogen and oxygen. nitrogen and oxygen. nitrogen and carbon. hydrogen and carbon Substance Percent by Mass In ytoplasm Water 77 Proteins 15 Fats 5 arbohydrates 2 Mineral salts page 2

3 11. In the diagram, which substance belongs in area Z? 14. Which is a characteristic of an enzyme?. It is an inorganic catalyst.. It is destroyed after each chemical reaction.. It provides energy for any chemical reaction.. It regulates the rate of a specific chemical reaction.. water. oxygen. nitrogen. carbon 12. Which ph indicates a substance that is more acidic than a substance with a ph of 4? Which molecule can be classified as organic? Element Number of toms Mol. Mol. Mol. Mol. Hydrogen arbon Nitrogen Oxygen alcium page 3

4 15. Graph I shows the relationship between the relative rates of activity of enzymes and and temperature. Graph II shows the relationship between the relative rates of activity of enzymes and and ph. 16. Which graph below best illustrates the pattern of enzyme action rates when a specific substrate is slowly added to a system with a fixed enzyme concentration? The distortion (change in shape) of enzyme molecules which occurs at high temperatures is known as. synthesis. specificity The optimum environment for enzyme is. replication. denaturation. a basic medium. an acidic medium. either an acidic or a basic medium. a neutral medium 18. Stage II in the diagram most correctly represents. an inorganic catalyst. a denatured enzyme. a vitamin. an enzyme-substrate complex page 4

5 19. Procedures 1) student mixed appropriate amounts of vegetable oil (fat source), lipase and phenol red (an indicator which is pink in the presence of a base and yellow in the presence of an acid) in test tube number 1. 2) In test tube number 2, the student mixed the same amounts of vegetable oil, lipase, and phenol red as in test tube number 1 and then added some bile salts (a fat emulsifier). 3) In test tube number 3, the student mixed the same amounts of vegetable oil, phenol red, and bile salts as in test tube 2. Note: The contents of the three test tubes were all pink in color at the beginning of the investigation and were all kept at room temperature. Time ata Table olor hanges Test Tube 1 Test Tube 2 Test Tube 3 0 pink pink pink 15 min pink yellow pink 30 min pink yellow pink 45 min yellow yellow pink 60 min yellow yellow pink What would be the color of the contents of test tube 3 after 120 minutes?. white. yellow. blue. pink page 5

6 20. The diagram shown is of the lock-and-key concept of enzyme action that occurs in humans and on your knowledge of biology. 23. Which statement best describes step 2?. n enzyme is undergoing denaturation. Which chemical process is represented by the diagram?. dehydration synthesis. n enzyme is being hydrolyzed.. water molecules is being synthesized.. n enzyme-substrate complex is being formed.. aerobic respiration. photosynthesis. hydrolysis 24. change in the rate of enzyme action in aquatic invertebrates would most directly result from a change in the. number of consumers in the water 21. Which letter represents an enzyme?.. E... number of producers in the water. temperature of the water. salt concentrations 22. Which enzyme regulates the reaction represented by the word equation shown? lipid + water fatty acids + glycerol. amylase. lipase. TPase. protease 25. The rate of action of the enzyme protease is affected by. temperature, particle size, and lipase concentration. temperature, ph, and protein concentration. ph, particle size, and amylase concentration. ph, temperature, and carbohydrate concentration page 6

7 26. The optimal ph for the functioning of the human enzyme intestinal protease is 8. This ph is best described as. slightly basic. very basic. slightly acidic. very acidic 29. Small molecules combine chemically and form large, complex molecules by a process known as. hydrolysis. digestion. synthesis. nutrition 27. t very high temperatures, most enzymes do not increase the rate of the reactions that they regulate. The most probable reason for this lack of enzyme activity is that high temperatures 30. When substance and substance combine chemically and produce substance and water, this chemical process is known as. hydrolyze most substrates. alter the active sites of the enzymes. destroy all coenzyme molecules. produce stable enzyme-substrate complexes. anaerobic respiration. digestion. dehydration synthesis. enzymatic hydrolysis 28. The rapid decrease in the rate of enzyme action above 40 in the human body is most likely due to. the denaturation of the enzyme. the denaturation of the product. an increase in the substrate concentration. a decrease in the temperature 31. molecule of fat and three molecules of water are formed when a glycerol molecule combines with three fatty acid molecules. This process is known as. cyclosis. active transport. osmosis. dehydration synthesis page 7

8 32. The diagram shown represents the building block of a large molecule known as a 35. Which group of atoms represents a carboxyl (acid) group?. protein. fatty acid. carbohydrate. nucleic acid Vegetable oils, such as corn oil, belong to which general class of organic substances?. lipids. proteins. carbohydrates. salts 36. The molecular formula for a particular compound is 12 H 22 O 11. This compound is classified as a. carbohydrate. lipid. protein. nucleic acid 34. biochemist was given a sample of an unknown organic compound and asked to determine the class of organic compounds to which it belonged. The chart shown represents the results of biochemist s analysis of the sample. ased on these results, to which class of organic compounds did this sample belong? Element Number of toms per Molecule 12 H 22 O 11 S 0 N 0 P Organic compounds in which molecules are made up of building blocks containing amino groups are classified as. proteins. carbohydrates. lipids. fatty acids. lipid. protein. salt. carbohydrate page 8

9 38. Select the compound, chosen from the list below, which is most closely associated with this statement: These molecules are added during the process of hydrolysis and are removed during dehydration synthesis. 41. Which is a direct result of the digestion of complex carbohydrates?. water. simple sugars. carbon dioxide. energy. arbohydrates. Lipids. Vitamins. Water 39. Select the compound, chosen from the list below, which is most closely associated with this statement: These molecules often function as coenzymes.. arbohydrates. Lipids. Proteins. Vitamins 42. ll carbohydrates are compounds that contain the elements. iron, magnesium, and carbon. oxygen, hydrogen, and nitrogen. carbon, oxygen, and nitrogen. carbon, hydrogen, and oxygen 40. Which types of compounds are not classified as carbohydrates?. lipids. sugars. starches. polysaccharides page 9

10 Problem-ttic format version c Educide Software Licensed for use by laire Minto Terms of Use at 01/25/ nswer: 21. nswer: 2. nswer: 3. nswer: 4. nswer: 5. nswer: 6. nswer: 7. nswer: 8. nswer: 9. nswer: 10. nswer: 22. nswer: 23. nswer: 24. nswer: 25. nswer: 26. nswer: 27. nswer: 28. nswer: 29. nswer: 30. nswer: 31. nswer: 11. nswer: 12. nswer: 13. nswer: 14. nswer: 15. nswer: 16. nswer: 17. nswer: 18. nswer: 19. nswer: 20. nswer: 32. nswer: 33. nswer: 34. nswer: 35. nswer: 36. nswer: 37. nswer: 38. nswer: 39. nswer: 40. nswer: 41. nswer: 42. nswer:

Organic Molecules. 1. The structural formulas shown represent certain organic compounds found in living cells.

Organic Molecules. 1. The structural formulas shown represent certain organic compounds found in living cells. Name: ate: 1. The structural formulas shown represent certain organic compounds found in living cells. 1. (1) () (3) Which formula represents a monosaccharide? (4) (5). 1.. 3. 5. Which formula represents