Which of the following compounds may be polymers?

1. Which of the following compounds may be polymers? • carbohydrates • nucleic acids • proteins • all of these

2. Carbon compounds that come from living organisms are called _____ compounds. • water • organic • homogeneous • biological

3. How many electrons can a carbon atom share? Carbon has a total of 6 electrons • one • two • three • four

4. The nucleus of an atom contains _____. • protons and neutrons • neutrons and electrons • protons and electrons • protons, neutrons, and electrons

5. Electrons move about the nucleus of an atom in regions called _____. • electron clouds • nuclei • air • isotopes

6. What are the basic building blocks of proteins? • nucleic acids • peptide bonds • amino acids • glycerol and fatty acids

7. Water dissolves many ionic and molecular compounds because of its _____. • ionic bonding • polarity • covalent bonding • hydrogen bonding

8. When molecules of glucose and fructose combine to form sucrose, they do so by _____. • hydrolysis • electron clouds • condensation • radiation

9. The various enzymes in our bodies are _____. • lipids • carbohydrates • nucleotides • proteins

10. Glucose and fructose, with the formula C6H12O6, differ in _____. • numbers of atoms • arrangement of atoms • kinds of atoms • arrangement of electrons

11. A very strong base might have a pH of _____. • 3 • 5 • 9 • 13

12. An atom of fluorine has nine electrons. Its second energy level has _____. • two electrons • eight electrons • seven electrons • nine electrons

13. Diffusion continues until there is no _____. • dynamic equilibrium • turgor pressure • concentration gradient • homeostasis

14. Brownian motion is evidence of _____. • polar ions • random motion of molecules • chemical energy • microorganisms

15. Which of the images in Figure 6-4 depicts dynamic equilibrium? • A • B • C • D

16. The smaller subunits that make up nucleic acids are ____________________. • Super tiny • Amino acids • Nucleotides • Carbohydrates

17. Two atoms that share electrons are held together by ____________________ bonds. • Diffusion • Isotonic • Covalent • Ionic

18. glucose polymer that forms the cell walls of plants • cellulose • polar molecule • nucleus • peptide bond • polymer • solution • enzyme • metabolism

19. large molecule formed when many smaller molecules bond together • cellulose • polar molecule • nucleus • peptide bond • polymer • solution • enzyme • metabolism

20. molecule with unequal distribution of charge • cellulose • polar molecule • nucleus • peptide bond • polymer • solution • enzyme • metabolism

21. protein that speeds up a chemical reaction • cellulose • polar molecule • nucleus • peptide bond • polymer • solution • enzyme • metabolism

22. bond formed between amino acids • cellulose • polar molecule • nucleus • peptide bond • polymer • solution • enzyme • metabolism

23. all the chemical changes that occur within an organism • cellulose • polar molecule • nucleus • peptide bond • polymer • solution • enzyme • metabolism

24. mixture in which one substance is distributed evenly in another • cellulose • polar molecule • nucleus • peptide bond • polymer • solution • enzyme • metabolism

25. center of an atom • cellulose • polar molecule • nucleus • peptide bond • polymer • solution • enzyme • metabolism

26. What are the 4 types of biomolecules/organic molecules? • Give an example of each. CARBOHYDRATES: sugar, starch, pasta, crackers, potatoes etc LIPIDS: oils, fats, chips, cheese, greasy foods PROTEINS: meat, peanut butter, milk NUCLEIC ACIDS: DNA, RNA

27. What are the tests to determine the presence of certain biomolecules/organic compounds? BROWN PAPER: test for lipids IODINE: test for starch BENEDICT’S SOLUTION: test for sugars