Microbiology Review

1. | Smallpox   A.  | has been eliminated as a naturally occurring infection in human beings. |

B.  | still occasionally occurs in Third World Countries. |

C.  | probably only had a human reservoir. |

D.  | was dealt with by vaccination. |

E.  | has been eliminated as a naturally occurring infection in human beings, AND was dealt with by vaccination. |

|

2. | Microorganisms are involved in  A.  | causing disease. |

B.  | curing/treating disease. |

C.  | preparing food. |

D.  | cleaning up pollutants. |

E.  | All of the choices are correct. |

| |

|

3. | The structures present in the hay infusions used in experiments on Spontaneous Generation that made them difficult to sterilize are  A.  | chlorophyll. |

B.  | toxins. |

C.  | organelles. |

D.  | endospores. |

| |

| |

|

4. | Within a lab, a scientist has two samples-the first is a prion sample, while the second is a viroid sample.  But those pesky labels have come off of the flasks!  She wants to run a simple analysis to determine which one is which.  What type of molecule would she look for to determine which one is which?   A.  | lipids |

B.  | DNA |

C.  | protein |

D.  | polysaccharides |

| |

|

5. | Bacteria are good models to use because they  A.  | are large in size. |

B.  | share many biochemical/physiological properties with more complicated organisms. |

C.  | can be assembled into multicellular organisms. |

D.  | have complicated growth requirements. |

|

| |

6. | Which is not usually true of Archaea? 

A.  | They are found as rods, spheres, or spirals. |

B.  | They reproduce by binary fission. |

C.  | They contain rigid cell walls. |

D.  | They are found as single cells. |

E.  | They contain peptidoglycan as part of their cell walls. |

|

7. | Outside a cell, viruses are  A.  | running a small number of biochemical reactions. |

B.  | synthesizing proteins necessary for entry into the host. |

C.  | inactive....