This set of Environmental Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Aerobic Bacterial Degradation of Biopolymers”.
1. Molecular oxygen available in the environment helps to degrade plant biomass to carbon dioxide and ___________
a) water
b) oxygen
c) carbon
d) potassium
View Answer
Explanation: Molecular oxygen that is found in the environment helps to degrade plant and animal biomass into carbon dioxide and water and not into Oxygen, Carbon and Potassium.
2. Which of the following helps to hydrolyze the macromolecules?
a) Exo enzymes
b) Endo enzymes
c) Sodium
d) Potassium
View Answer
Explanation: Exo-enzymes are used to hydrolyze the macromolecules which is produced and excreted after use after contact with respective inducers, endo enzymes doesn’t help in this process whereas, sodium and potassium are not enzymes.
3. The exo enzyme __________ to the bio polymers.
a) adsorb
b) absorb
c) miscible
d) immiscible
View Answer
Explanation: The exo enzymes adsorb to the bio polymers and hydrolyze them to monomers or oligomers, the exo enzymes don’t absorb, or is not miscible or immiscible to the biopolymers or else it won’t be able to hydrolyze them to monomers.
4. Which of the following is the central intermediate of almost all the metabolism?
a) Acetyl CoA
b) Oil
c) Natural gas
d) Carbon dioxide
View Answer
Explanation: Acetyl CoA is the central intermediate of almost all the metabolism of organic compounds, Oil, Natural gas are naturally found in the atmosphere and carbon dioxide is not the central intermediate of almost all the metabolism.
5. When carbohydrates are respired by aerobic bacteria, almost one third of initial energy is lost.
a) True
b) False
View Answer
Explanation: carbohydrates are respired by aerobic bacteria leads to loss of almost one third of the initial energy and two-thirds are conserved biochemically.
6. The conserved energy in the phosphanhydride bond of ATP is partially used for cell multiplication and ___________
a) maintenance metabolism
b) mashing with Adhesives
c) mashing with Fibers
d) mashing with Alkali and acids
View Answer
Explanation: The conserved energy in the phosphanhydride bond of ATP is partially used for cell multiplication and maintenance metabolism during oxidative phosphorylation by proliferating bacteria, whereas, mashing with Adhesives, Fibers, Alkali and acids is usually not used for conserved energy usage.
Sanfoundry Global Education & Learning Series – Environmental Biotechnology.
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