Multiple Choice
This bacterial appendage is involved in conjugation (DNA exchange).
What is pili?
These organisms prefer temperatures <20 C.
What are psychrophiles?
This is the primary cell wall component of (most) bacteria.
What is peptidoglycan?
Positive chemotaxis is the movement towards nutrients.
True
This term refers to algae that is suspended.
The classification level of microbes that demonstrate low potential hazard with standard laboratory practices.
What is Class II?
This is the soil horizon known as "bedrock."
What is the R Horizon?
Influenza virus can travel across species.
True
This term describes and organism that gets its energy AND carbon from organic compounds.
What is a chemoheterotroph?
The MAIN mechanism of aerosol deposition.
What is gravitational settling?
Staphylococcus bacteria produce this kind of toxin.
What is an enterotoxin?
Barnacles found on the tail of a blue whale is an example of epibiotic relationship.
False
This type of aquifer has the slowest flow rate.
What is a deep aquifer?
The aquatic habitat layer in which temperature changes rapidly and organic matter accumulates.
What is the thermocline?
This organism is found in the Gulf of Mexico and causes toxins that result in red tides.
What is Karenia brevis?
Positive pressure airflow travels inside an isolated area.
False
This is the pH of soil after heavy rainfall.
What is acidic?
Flexible enzymes would be a great adaptation for a microorganism in this kind of environment.
What is extreme cold?
This organism is a fungus that uses “fishing lines” to capture rotifers.
What is Zoophagus insidians?