Lab Quiz 1

This crossword was created by Gary E. Kaiser with EclipseCrossword - www.eclipsecrossword.com

12
   
3                        4
                           
     
     
56                 
                     
  7     
         
      8 
         
    910     
             
    11                  12   
                             
13                         
                           
        14                         
                                   
    15                     
                           
        16 
           
17                          18
                             
      19         
                 
  20                 
                     
    2122  23      24       
                           
25             
               
26      27                                28
                                           
               
               
    29                         
                               
30                       
                         
      31                     
                             
             
             
  32  33                   
                           
34                         
                           
       
       
    35                               
                                     
       
       
    36               
                     
   
   
 
 
37                               
                                 

Across

  1. Heat-loving bacteria. Their optimum growth temperature is between 45°C and 70°C.
  2. A thick, rigid spiral.
  3. Determining the number of bacteria in a certain volume of a sample by counting the number of colonies that grow from that sample. (2 words)
  4. The organisms appear as a general cloudiness throughout the broth.
  5. Organism that require a low concentration of oxygen for growth.
  6. A cylindrical or hotdog-shaped bacterium.
  7. A medium that contains additives that cause an observable color change in the medium when a particular chemical reaction occurs.
  8. A liquid medium.
  9. Free of all life forms.
  10. A medium that is selective for Gram-negative bacteria and differentiates bacteria based on lactose fermentation.
  11. The solidifying agent added to culture medium in order to grow bacteria on a solid surface.
  12. Cocci in irregular, often grape-like clusters.
  13. A thin, flexible spiral .
  14. An incomplete spiral or comma-shaped bacterium.
  15. A medium that contains additives that enhance the growth of certain organisms.
  16. The ocular lens of a microscope. (2 words)
  17. This spectrophotometer reading is directly proportional to the cell concentration. (The greater the reading, the greater the number of bacteria.)
  18. Organism that grow only without oxygen and, in fact, oxygen inhibits or kill it. (2 words)
  19. A medium that has agents added that will inhibit the growth of one group of organisms while permitting the growth of another.
  20. Bacteria that grow at very high temperatures. Their optimum growth temperature is between 70°C and 110°C.

Down

  1. A mass of organisms appears as a deposit at the bottom of the tube.
  2. The first of an organism's scientific names.
  3. Bacteria that grow best at moderate temperatures. Their optimum growth temperature is between 25°C and 45°C.
  4. Cold-loving bacteria. Their optimum growth temperature is between -5°C and 15°C.
  5. The second of an organism's scientific names.
  6. A cube of eight cocci.
  7. Organism that grow with or without oxygen, but generally better with oxygen. (2 words)
  8. A visible mass of microorganisms growing on an agar surface and usually originating from a single organism or arrangement of organisms.
  9. Able to produce pigment during growth.
  10. A microbial culture in which all organisms are descendants of the same organism. (2 words)
  11. A chain of cocci.
  12. A mass of organisms is floating on top of the broth.
  13. One-one millionth (1/ 1,000,000) of a meter.
  14. Organism that grow only in the presence of oxygen. (2 words)
  15. Pigment does not diffuse out of the organism into the surrounding medium. The colonies appear pigmented but the agar does not change color. (2 words)
  16. Pigment diffuses out of the organism into the surrounding medium. Both the colonies and the agar will appear pigmented. (2 words)
  17. One-one billionth (1/ 1,000,000,000) of a meter.


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