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Name __________________ Period _____ Date _________
Quiz: Introduction to Soils and Soil Microbiology
1.
You analyze a soil sample and find that it is 50% sand, 30% silt, 10% clay, and 10%
organic matter. This soil would likely have the following properties:
a.
Good drainage and will not hold water.
b. Good drainage and will hold water.
c.
Poor drainage and will not hold water.
d. Very fertile and will hold water.
2.
You observe a stream in your area that is surrounded by agricultural fields. It is
likely that the stream sediment will contain:
a.
Low levels of silt and high levels of fertilizer.
b. High levels of silt and high levels of fertilizer.
c.
Low levels of sand and low levels of fertilizer.
d. High levels of clay and high levels of fertilizer.
3.
The 3 main domains in biology are:
a.
Animalia, Plantae, Bacteria
b. Animalia and Plantae, Algae, Archaea
c.
Eukaryota, Animalia, Bacteria
d. Eukaryota, Archaea, Bacteria
4.
Processes in the nitrogen cycle:
a.
Are only important to plants.
b. Move nitrogen from the atmosphere through soil and water.
c.
Move nitrogen from the atmosphere, through soil and water, and back to
the atmosphere.
d. Only makes nitrogen available to plants.
5.
Most processes in the nitrogen cycle:
a.
Occur in plants.
b. Occur in bacteria and archaea.
c.
Occur in DNA.
d. Occur in the atmosphere.
VALERY LYNN, IISME 2011
Name __________________ Period _____ Date _________
6.
Nitrogen-fixing bacteria and archaea:
a.
Convert nitrogen gas from the atmosphere into a form useable by plants.
b. Convert ammonium from the atmosphere into a form useable to plants.
c.
Return ammonium into the atmosphere.
d. Return nitrogen gas into the atmosphere.
7.
Denitrifying bacteria and archaea:
a.
Convert nitrogen gas from the atmosphere into a form useable by plants.
b. Convert ammonium from the atmosphere into a form useable to plants.
c.
Return ammonium into the atmosphere.
d. Return nitrogen gas into the atmosphere.
8.
Processes in the nitrogen cycle are catalyzed by:
a.
Nucleic acids
b. Enzymes
c.
Carbohydrates
d. Nitrogen
9.
It is important to use sterile technique when investigating soil bacteria and
archaea because:
a.
You might get a disease from the soil.
b. Handling soil will kill the organisms you are investigating.
c.
You don’t want to contaminate your samples with bacteria from your hands
or non-sterile equipment.
d. Soil is dirty.
10.
Your lab partner is collecting soil samples and you notice that he is scraping soil
off the shovel and placing it into a bag. The best thing to say to him is:
a.
“That sample might be contaminated, let me squirt some alcohol on it.”
b. “Hey stupid, that’s the wrong way to take a sample.”
c.
“I’ll text you the right way to take a sample.”
d. “That sample might be contaminated, take another one from the middle of
the clump.”
VALERY LYNN, IISME 2011
Name __________________ Period _____ Date _________
Answer Key
1. A
3. D
5. B
7. D
9. C
2. B
4. C
6. A
8. B
10. D
VALERY LYNN, IISME 2011