Which of the following are NOT found in the gastrointestinal tract of healthy humans?
A) Bacteroides
B) Clostridium
C) Escherichia coli
D) protists
Answer: D
You might also like to view...
Elena and Lenski's generational experiment with E. coli demonstrated that bacteria could evolve to metabolize:
A. lactose. B. glucose. C. citrate. D. nitrogen. E. succinate.
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
What will be an ideal response?
How did the earliest single celled microorganisms produce energy to drive metabolic processes?
A. Aerobic cellular respiration. B. Anaerobic cellular respiration. C. Sulfuric acid respiration. D. Both aerobic and anaerobic cellular respiration. E. Sulfuric acid, aerobic and anaerobic respiration.
The condition known as microbial antagonism may be defined as
A. microorganisms that remain with a person throughout life. B. a relationship between two organisms where one member harms the other. C. a relationship between two organisms where only one member benefits. D. an unsuccessful microbial invasion due to the presence of pre-existing microbes. E. a relationship between two organisms where both members benefit.