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CH 2.3 Exam: DO NOT WRITE ON THIS EXAM 1. Amino Acid is to protein as a. fat is to wax b. DNA is to RNA c. sugar is to fat d. simple sugar is to starch 2. A monosaccharide is a a. Carbohydrate b. Lipid c. nucleic acid d. protein 3. Which of the following organic compounds is the main source of energy for living things? a. Carbohydrates c. nucleic acid b. Lipids d. proteins 4. Which of the following is NOT a function of proteins? a. store and transmit heredity b. help to fight disease c. control the rate of reactions and regulae cell processes d. build tissues such as bone and muscle 5. Which statement is true? a. simple sugars are made of polysaccharides b. glycerol is made of fatty acids c. RNA molecules are made of nucleotides d. Amino acids are made of proteins 6. ____________________ are important parts of biological membranes and waterproof coverings. a. Carbohydrates c. amino acids b. Lipids d. nucleotides 7. Polysaccharides/macromolecules are formed through the process known as _____________________. a. Cohesion c. polymerization b. adhesion d. distribution 8. ______________________ stores and transmits genetic information. a. nucleic acids c. lipids b. proteins d. carbohydrates 9. Plants and some animals use ________________________ for strength and rigidity. a. nucleic acids c. proteins b. lipids d. carbohydrates 10. Which of these is NOT a monosaccharide? a. galactose b. glycogen c. glucose d. fructose 11. Carbohydrates: monomer= ______________________________ 12. Carbohydrates: polymer= ________________________________ 13. Nucleic acid: monomer= ________________________________ 14. Protein: Monomer = _________________________________ 15. Carbon atoms have ___________ valence electrons. 16. Label the figure as UNSATURATED or SATURATED 17. What are the two types of nucleic acids that your book mentions? (2pts) 18. What are the three categories of lipids listed in your book? (3pts) Type of Molecule Carbohydrate Lipid 23. 25. Components of Molecule Function of Molecule 19. 20. 21. 22. Hydrogen, oxygen, nitrogen, carbon, and phosphorus 26. 24. Controls rate of reactions, transports substances into or out of cell, fights disease BONUS: 1. Water’s ___________________ allows it to dissolve compounds such as table salt. 2. The pH scale is a measurement system that indicates the concentration of _______________ in a solution. 3. Does a solution with a H+ ion concentration less than pure water have a pH LESS OR GREATER than 7?