1. The process by which fatty acid molecules and glycerol are joined to form a fat is called (1.) hydrolysis (2.) synthesis (3.) photosynthesis (4.) oxidation

2. Which could not be a compound from which a protein could be directly formed? (1.) oil (2.) amino acid (3.) dipeptide (4.) polypeptide

3. Which group of organic compounds includes the enzymes? (1.) proteins (2.) starches (3.) carbohydrates (4.) lipids

4. Which food substance is most likely to contain the element nitrogen? (1.) meat (2.) vinegar (3.) pure corn oil (4.) table sugar

5. Which is a building block used in the formation of carbohydrates? (1.) glycerol (2.) monosaccharide (3.) amino acid (4.) dipeptide

6. The breaking of a peptide bonds in splitting a dipeptide apart is accompanied by the (1.) release of oxygen (2.) addition of water (3.) addition of hydrogen (4.) release of water

7. Lipids are formed by a chemical reaction between (1.) two glucose molecules (2.) a glycerol molecule and three fatty acids (3.) two amino acid molecules (4.) DNA & RNA

8. A hydrolysis reaction occurs when (1.) two simpler molecules are combined and water is split out in the reaction (2.) a complex molecule is split into simpler molecules by the addition of water (3.) one element is exchanged for another in a compound (4.) fats are formed from smaller organic molecules

9. Disaccharides are formed by a chemical reaction between (1.) two amino acid molecules (2.) two glucose molecules (3.) a glycerol molecule and three fatty acids (4.) DNA & RNA

10. A polypeptide is an example of a(n) (1.) protein (2.) carbohydrate (3.) lipid (4.) nucleic acid

11. A common characteristic of carbohydrates, proteins and nucleic acids is that they (1.) have hydrogen and oxygen atoms present in a two to one ratio (2.) use dehydration synthesis to combine their basic building blocks (3.) are used as organic catalysts in biochemical reactions (4.) use monosaccharides as their basic building units

12. The complete hydrolysis of carbohydrates usually results in the production of (1.) carbon dioxide (2.) simple sugars (3.) glycogen (4.) urea

13. Which substances are commonly used as the building blocks in the synthesis of some proteins? (1.) sugars (2.) amino acids (3.) fatty acids and glycerol (4.) amino acids and glycerols

Use the choices below to answer the questions being asked in numbers 14 through 18. Some choices may be used once, more than once, or not at all.

a. Glycerol

b. Fatty Acid

c. Amino Acid

d. A neutral lipid (fat)

e. Glucose

14. This is a building block of a protein.

15. This is a building block of a disaccharide.

16. Three of these are needed to join in aiding with the formation of a lipid.

17. In addition to the compound in # 16, this compound is also needed to form a lipid.

18. This compound contains the elements carbon, hydrogen, and oxygen. The ratio of hydrogen to oxygen in this compound is 2:1.

19. Protein has a great potential for variation of structure because (1.) many amino acids may combine in a number of ways (2.) different amino acids occur in pairs (3.) fatty acids may vary (4.) nucleotides may vary

20. Water is produced as a waste product of the process of (1.) protein ingestion (2.) synthesis (3.) hydrolysis (4.) carbohydrate digestion

21. Which compound has a chemical composition most closely related to maltose? (1.) starch (2.) ATP (3.) protein (4.) RNA

22. Which pair of compounds could be classified as inorganic? (1.) nucleic acids and minerals (2.) water and salt (3.) proteins and carbohydrates (4.) proteins and water

23. Cellulose is formed from glucose molecules by a process known as (1.) hydrolysis (2.) cellular respiration (3.) synthesis (4.) photosynthesis

Now hopefully some correct answers!

1. 2

2. 1

3. 1

4. 1

5. 2

6. 2

7. 2

8. 2

9. 2

10. 1

11. 2

12. 2

13. 2

14. c

15. e

16. b

17. a

18. e

19. 1

20. 2

21. 1

22. 2

23. 3