Q. The ability of Vibrio fischeri to produce bioluminescence chemicals only when a certain population density has been reached is an example of

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Q. Antimicrobial constituents for the microbial growth in foods are

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Q. The average size of cells during the exponential phase of growth is

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Q. A culture broth tube was very turbid at the surface but clear throughout the rest of the tube indicating that the

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Q. A synergistic effect is observed when

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Q. Generation time is

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Q. The term facultative anaerobe refers to an organism that

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Q. The microorganisms that grow best in a low-oxygen environment is called a (n)

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Q. Pseudomonas pseudoflava can grow as

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Q. Which of the following is the suitable temperature range for mesophiles?

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Q. Exponential phase of growth curve of bacteria is of limited duration because of

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Q. A culture broth tube was very turbid at the bottom of the tube but clear at the top of the tube indicating that the

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Q. In the exponential phase, the cells and cell mass

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Q. What is the primary source of food for marine life?

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Q. Postgates assay technique is useful in determining if a cell is viable even though it is

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Q. What are the extrinsic factors for the microbial growth?

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Q. Quantitative measurement of bacterial growth can be carried out by measuring

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Q. Organisms such as lactobacilli that have elaborate requirements for specific nutrients i.e. vitamins and other growth promoting substances, are generally called as

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Q. The combination of low levels of NaCl, NaNO3 (sodium nitrate), and slightly acid pH can prevent multiplication and toxin formation of

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Q. Bacteria of genus Nitrosomonas use __________ as their electron source.

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