Growth and Nutrition of Bacteria Questions

• The ability of Vibrio fischeri to produce bioluminescence chemicals only when a certain population density has been reached is an example of
• A culture broth tube was very turbid at the surface but clear throughout the rest of the tube indicating that the
• A culture broth tube was very turbid at the bottom of the tube but clear at the top of the tube indicating that the
• Which of the following has more tolerance for acidic pH (lower pH)?
• The term obligate anaerobe refers to an organism that
• Implicit factors
• The reproduction by budding occur in
• Microaerophilic bacteria are those which require
• An organism is completely dependent on atmospheric O2 for growth. This organism is
• The period between inoculation of bacteria in a culture medium and beginning of multiplication is known as
• An organism has an optimal growth rate when the hydrogen ion concentration is very high. This organism is
• Generation time of Escherichia coli is
• The combination of low levels of NaCl, NaNO3 (sodium nitrate), and slightly acid pH can prevent multiplication and toxin formation of
• What are the extrinsic factors for the microbial growth?
• The term aerotolerant anaerobe refers to an organism that
• Which of the following procedures uses a photocell to measure absorbance of a culture to regulate the flow of culture media?
• The average size of cells during the exponential phase of growth is
• A microbe, which grows at temperatures above 95° C is most likely to be
• The term facultative anaerobe refers to an organism that
• Starvation proteins are produced by a culture during which of the following segments of the growth curve?