Top 1000+ Solved Microbiology MCQ Questions Answer
Q. Which one of the following mineral elements play an important role in biological nitrogen fixation
a. Copper
b. Magnesium
c. Zinc
d. Molybdenum
Q. Clostridium welchii spore formation can be induced only on specified media such as
a. Wilson-Blair medium
b. Macconkey medium
c. Ellner medium
d. Thayee-Martion medium
Q. Mycotoxins are formed during the end of
a. Lag phase
b. Log phase
c. Death phase
d. Stationary phase
Q. Bacteria which need oxygen for growthare called
a. Thermophilic bacteria
b. Microaerophilic bacteria
c. Facultative anaerobic bacteria
d. Mycobacteria
Q. The ion that is required in trace amountsfor the growth of bacteria is
a. Calcium
b. Magnesium
c. Cobalt
d. Sodium
Q. The most important vitamin for thegrowth of bacteria is
a. B-complex
b. Vitamin A
c. Vitamin D
d. Vitamin C
Q. The principle in microbiological assays is
a. At certain range the concentration of growth factor will bear a linear relationship to the amount of nutrients added
b. Concentration of growth factor have a linear relationship with the growth of the organism
c. Both a and b
d. None of the above
Q. If the source of energy for bacteria is fromchemical compounds they are said to be
a. Phototrophs
b. Autotrophs
c. Chemotrophs
d. Chemolithotroph
Q. In the synthesis of cell components themajor element required is
a. Nitrogen
b. Sulphur
c. Carbon
d. Oxygen
Q. For the formation of cell-components theelements required are
a. Nitrogen
b. Oxygen
c. Sulphur
d. All of these
Q. For the synthesis of amino acids cysteine, cystine and methionine the element required is
a. Sulphur
b. Oxygen
c. Nitrogen
d. None of these
Q. Sulphur can be utilized by bacteria in theform of
a. Organic compounds
b. Inorganic compounds
c. Elemental compounds
d. All of the above