MCB 2610 Lab: Week 10
If a nitrate broth tube does not change color after adding Nitrate Reagents
A&B AND zinc, did nitrate reduction occur? - correct answer ✔yes
Name one of the five major groups of organisms that can/must grow in the
absence of free oxygen - correct answer ✔fermentative, facultative
anaerobes
T/F: fermentative organisms can also perform respiration - correct answer
✔false
Name one of the five major groups of organisms that can/must grow in the
presence of free oxygen - correct answer ✔aerobes, fermentative,
microaerophiles
T/F: Sodium thioglycolate is a reducing agent used to maintain an anaerobic
environment in culture media - correct answer ✔true
T/F: All bacterial cells that perform respiration use oxygen as a terminal
electron acceptor - correct answer ✔false
Nitrate reduction is an example of ____________ respiration - correct answer
✔anaerobic
What is the final product of the process known as denitrification? - correct
answer ✔nitrogen gas
If a nitrate broth tube does not change color after adding Nitrate Reagents
A&B AND zinc, did nitrate reduction occur? - correct answer ✔yes
Name one of the five major groups of organisms that can/must grow in the
absence of free oxygen - correct answer ✔fermentative, facultative
anaerobes
T/F: fermentative organisms can also perform respiration - correct answer
✔false
Name one of the five major groups of organisms that can/must grow in the
presence of free oxygen - correct answer ✔aerobes, fermentative,
microaerophiles
T/F: Sodium thioglycolate is a reducing agent used to maintain an anaerobic
environment in culture media - correct answer ✔true
T/F: All bacterial cells that perform respiration use oxygen as a terminal
electron acceptor - correct answer ✔false
Nitrate reduction is an example of ____________ respiration - correct answer
✔anaerobic
What is the final product of the process known as denitrification? - correct
answer ✔nitrogen gas
