1. Which of the following trace element influence the production of Mitomycin??
a) Zn
b) Fe
c) Mn
d) Cu
Explanation: Iron influences the production of Mitomycin. Mitomycin is an important drug which is used to treat different types of cancer. Mitomycin is obtained from a soil fungus.
2. Which of the following resists the change in pH?
a) Buffer
b) Growth factors
c) Minerals
d) Inhibitors
Explanation: The solution which resists the change in pH of the media is called a buffer solution. It may be acidic or basic buffer solution. Buffers are required for maintaining the pH of the fermentation medium.
3. Which of the following is an example of a chelating agent?
a) Magnesium
b) EDTA
c) Ca
d) Glycerol
Explanation: The chelating agent is added to the medium to prevent the precipitation of metal phosphates. One of the examples of the chelating agent is EDTA
4. The _____________ are not the growth factors.
a) Vitamins
b) Amino acids
c) Fatty acids
d) Carbohydrates
Explanation: Vitamins, amino acids, fatty acids or sterols are the growth factors required for microorganisms to synthesize complements of cell components.
5. Which of the following is not an example of buffer?
a) CaCO3
b) KH2PO4
c) NaH2PO4
d) NaOH
Explanation: The examples of buffer solution are Calcium Carbonate (CaCO3), Monosodium phosphate (NaH2PO4) and Monopotassium phosphate (KH2PO4).
6. Chlorine does not appear to play a nutritional role in the metabolism of fungi.
a) true
b) false
Explanation: Foster in 1949 discovered that chlorine does not play a nutritional role in the metabolism of fungi. However, it is required by some bacteria.
7. Which of the following trace element influence the production of Gentamicin?
a) mg
b) zn
c) fe
d) Co
Explanation: Cobalt influences the production of Gentamicin. Gentamicin is used to fight against a broad range of bacterial infections. It works by stopping the growth of bacteria.
8. Which of the following growth factor is used in vinegar production?
a) Calcium Carbonate
b) Calcium Phosphate
c) Calcium Pantothenate
d) Calcium Hydroxide
Explanation: Calcium pantothenate is used as a growth factor useful in the production of vinegar. Vinegar is useful in cleaning and washing hairs and also in the preservation of food.
9. Iron, Zinc, Copper influence the production of ____________
a) Protease
b) Neomycin
c) Citric acid
d) Penicillin
Explanation: Ferrous, Copper and Zinc are the trace elements that influence the production of Penicillin. Penicillin is an antibiotic which helps in the bursting cell wall of bacteria, i.e., cell lysis.
10. Which of the following is not the product of fermented fruit?
a) Wine
b) Whisky
c) Vinegar
d) Beer
Explanation: Wine, Beer, Whisky, Brandy, Rum are the products which are obtained from the fermentation of fruits like grapes. Vinegar is produced by the fermentation of sugars by bacteria.