BIOL112 SI- Ch. 22 (2/23)

Carbon fixation involves inorganic molecules.

• True

• False

Two species living in close relationship:

• Symbiosis

• Parasitism

• Commensalism

• Mutualism

• Free-living

Which includes pathogens?

• Parasitism

• Mutualism

• Commensalism

• Symbiosis

One species benefits, other species is unaffected:

• Symbiosis

• Parasitism

• Commensalism

• Mutualism

• Free-living

These toxins are secreted out of prokaryotes.

• Endotoxins

• Exotoxins

___ reduces ammonia.

• Rhizobium

• Azotobacter

• Nitrobacter

• Fungus

Which is not related to microbial remediation?

• Toxic mercury is converted to a non-toxic form

• The removal of pollutants by prokaryotes

• Toxic air filtered of toxic gases

• Hg2+ converted to Hg0

Which relationship explains the type of relationship pathogens have with other organisms?

• Symbiosis

• Parasitism

• Commensalism

• Mutualism

Bacteria become resistant to antibiotics due to overuse or misuse.

• True

• False

Prokaryotes can do all of the following except ____.

• make enzymes

• act as antibiotics

• fix nitrogen in the soil

• reproduce sexually