You would like to identify as many bacterial species as possible in the human mouth. Why is biochemical testing not the most efficient and accurate method of completing this task?
A. Since you do not know the growth characteristics and metabolic properties of the bacteria in the mouth, you cannot determine all varieties of media to use for isolation and culture.
B. Bacteriological media is very expensive, particularly when you would have to use a variety of types to identify the different bacteria.
C. Biochemical testing, using a variety of media, is inaccurate. It has been replaced by more advanced testing procedures.
D. Bacteria in the mouth are difficult to grow because of the adverse conditions in the oral habitat.
Answer: A
You might also like to view...
Eosinophils defend against protist and helminth parasites by
A. releasing cationic proteins and reactive oxygen metabolites. B. antibody production. C. complement activation. D. phagocytosis.
Tetanus is caused by a toxin produced by
a. Clostridium botulinum. b. Clostridium tetani. c. Clostridium perfringens. d. Clostridium welchii. e. Clostridium dificile.
Based on the accompanying table, which of the following characteristics are used to establish the family level of
classification for corn? a. terrestrial and photosynthetic b. a grass with hollow stems c. a flowering plant d. 1-seeded fruit e. monocot
Attachment of a bacteriophage to its host requires ________.
A. specific receptor molecules on the host cell B. specific surface proteins on the bacteriophage and specific receptor molecules on the host cell C. specific surface proteins on the bacteriophage D. nucleic acid protein interactions