When fresh media is inoculated with microbial culture, there is typically a peri

Question

When fresh media is inoculated with microbial culture, there is typically a period of adaptation called the ____. a. Lag phase., b. Log phase (exponential) c. Stationary phase d. Death phase Which phase of the microbial growth curve precedes stationary phase? a. Lag phase b. Log phase (exponential) c. Stationary phase d. Death phase Turbidity of a culture is typically measured by____. a. Cell mass b. Coulter counting c. Absorbance d. Plate counts If you forgot to heat fix a smear before a Gram stain, what will occur? a. The stain would not adhere to the bacteria. b. The smear may not adhere to the slide. c. The decolonization step of the Gram stain would not work properly. d. Gram positive and Gram negative bacteria would both stain the same purple. Immersion oil can be used to increase resolution achieved, because it increases the between the specimen and the objective lens. a. Optical density, b. Refractive index; c. Transparency index; d. None of the above

Explanation / Answer

(46) a. lag phase

lag phase allows the adaptation required for bacterial cells

(47)b. Log phase ( Exponential phase)

the microorganisms are in a rapidly growing and dividing state

(48)C. Absorbance

(49)b.the smear may not adhere to the slide

(50)b. Refractive index

Oil Immersion Microscopy increases the refractive index of a specimen when used properly.

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