1. Which answer puts the steps of the scientific method in the correct order to solve a problem? 1.D  A  C  B  E 2.D  B  A  C  E 3.D  A  B  C  E 4.D  B  C  A  E A.If the problem was the yeast, then the bread should rise when I use the new yeast. B.Maybe the yeast that I used had gone bad. C.I will remake the bread using a new jar of yeast. D.The bread did not rise. E.On my second attempt the bread did rise so it is likely that the old yeast was bad.

2. Which answer below is a hypothesis for the claim that echinacea reduces the duration of a cold? 1.Does echinacea reduce the duration and symptoms of the common cold? 2.Echinacea reduces the duration and severity of the symptoms of the common cold. 3.If echinacea acts as above, then patients treated with echinacea at the first sign of cold symptoms should recover faster than untreated patients. 4.None of the above.

3. Which answer below would strengthen your experimental design? 1.Use a large sample size with a control. 2.Use a small sample size and only look at the affects on men. 3.Use a large sample size and don’t worry about any control—its irrelevant. 4.Use a large sample size.

4. When you eat a candy bar you are eating mostly simple sugars. If you eat a candy bar while watching a movie, how will your body utilize those sugars? 1.All of the sugars will be used immediately by your working muscles. 2.The sugars will likely be stored as glycogen. 3.The sugars will likely be stored as fat. 4.Both 2 and 3 are correct.

5. Which food below will maintain high blood sugar levels for the longest period of time? 1.Candy bar 2.Honey 3.Apple 4.Potatoes

6. The polysaccharides starch and cellulose are both made of glucose. Why can’t the enzyme salivary amylase breakdown both? 1.The orientation of the covalent bonds are different. 2.The active site of the enzyme cannot bind to cellulose. 3.The enzyme cannot digest cellulose at normal body temperatures (32 o C). 4.The covalent bonds in cellulose are stronger than in amylose.

7. Lactase cannot function properly in this example because the…. 1.shape is incorrect. 2.amino acid sequence is incorrect. 3.color is incorrect. 4.1 and 2

8. What is the complimentary strand to this strand: CCCCTTAGGAACC? 1.CCCCTTAGGAACC 2.GGGGTTAGGAACC 3.GGGGAATCCTTGG 4.GGTTCCTAAGGCC

9. Which sequence below is the RNA synthesized from the DNA sequence below: CCCCTTAGGAACC 1.GGGGAATCCTTGG 2.CCCCTTAGGAACC 3.GGUUCCUAAGGGG 4.GGGGAAUACCUUGG

10. Which component of a DNA macromolecule will dictate instructions to the cell? 1.The order of sugars (deoxyribose) in the DNA. 2.The order of phosphates in the DNA. 3.The order of bases (A,G,T,C) in a DNA. 4.All of the above

11. Which answer below will base pair with the DNA sequence below? TAT TAG TAG GTTA 1.ATAATCATCCAAT 2.AUAAUCAUCCAAU 3.ATTGGATGATTAT 4.TATTAGTAGGTTA

12. Which answer below represents the mRNA strand copied from the DNA strand below? TAT TAG TAG GTT 1.UAU UAC UAC CUU 2.AUA AUC AUC CAA 3.ATT GGA TGA TTA 4.ATA ATC ATC CAA

13. A normal cell has a high concentration of potassium on the inside and a low concentration of potassium on the outside. Also, a normal cell has a low concentration of sodium on the inside and a high concentration on the outside. Yet, the net movement of potassium is into the cell and the net movement of sodium is out of the cell. What type of transport is involved? 1.Osmosis 2.Facilitated transport 3.Active transport 4.Simple diffusion 5.Secondary active transport