Examine each slide and study the description in the text folder. After studying each slide and the printed text, answer the questions for that slide.

Introduction

1. List 3 ways in which bacteria are helpful:
   __________________________________________________________
   __________________________________________________________
   __________________________________________________________


2. What is a culture? ___________________________________________________

Slide 1: Bacteria of Decay

1. Where do decay bacteria live? ______________________________


2. Plants need _____________________ and ______________________ from the soil.


3. Where does the soil get minerals from? _______________________________ and _________________________


4. Bacteria break down or ______________________ dead organisms.

Slide 2: Bacteria of Fermentation

1. These bacteria help break down food in the ______________________________


2. Why would a company such as "Bright's" need this bacteria? ____________________________

Slide 3: Nitrogen Fixing Bacteria in the Soil

1. Green plants need ________________________ to grow.


2. These bacteria take _____________________ from the air and convert it into ______________________.


3. Where are these bacteria found? _______________________________

Slide 4: Nitrogen Fixing Bacteria in a Nodule

1. Describe a nodule: ______________________________________________________________


2. List 3 plants with nodules: _________________________, ___________________________, _____________________.


3. How do these bacteria save farmers money? _____________________________________________

Slide 5: Nitrogen Fixing Bacteria in the Roots

1. Explain the partnership that exists between a legume and these bacteria:
   _____________________________________________________________________________

Slide 6: Vinegar Bacteria

1. What is the process called when bacteria convert sugar into vinegar? ______________________________


2. What is the chemical name for vinegar? ______________________________

Slide 7: Cheese Bacteria

1. Bacteria can affect the _______________________ and _______________________ of cheese.

Slide 8: Sour Milk Bacteria

1. What shape do these bacteria have? ______________________________


2. Name one dairy product in which these bacteria are found: ______________________