________ are preparations of live microorganisms fed to animals to improve intestinal biota.

A) Prebiotics
B) Probiotics
C) Lantibiotics
D) Macrobiotics


Ans: B) Probiotics

Biology & Microbiology

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The Xer site-specific recombination system

a. is needed to allow segregation of nonrecombined daughter chromosomes. b. is inactive during the process of bacterial cell division. c. generates a single dimeric molecule. d. is needed to resolve the product of a general recombination between copies of the bacterial chromosome. e. is required to correct mutations generated during DNA replication.

Biology & Microbiology

Explain the hypersensitive response

What will be an ideal response?

Biology & Microbiology

Wind drives the ocean's currents and the __________ drives wind

a. Coriolis effect b. precipitation c. biogeochemical cycles d. sun e. evaporation

Biology & Microbiology

Which of the following organisms can use the process of lactic acid fermentation when oxygen concentrations are low?

a. yeast b. plants c. humans d. fish

Biology & Microbiology