This set of Basic Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Biomass – Availability of By-Products”.
1. Which among the following are not used as substrates in biotechnological processes?
a) Sugars
b) Starches
c) Oils
d) Software
View Answer
Explanation: Substrates in biotechnology are generally organic molecules. Sugars, starches and oils are organic molecules. Software and such tools can be used to assist in biotechnological processes.
2. Which among the following is not an agricultural or forestry waste?
a) Cereal straws
b) Soy wastes
c) Coconut shells
d) Petrochemical
View Answer
Explanation: Cereal straws, soy wastes and coconut shells are either forest or agricultural wastes. Petrochemicals are not waste products. Petrochemicals can be used for energy synthesis.
3. Which among the following is not a forest waste?
a) Trimmings
b) Sawdust
c) Bark
d) Rice husks
View Answer
Explanation: Barks of tress are a forest waste. Sawdust and bark are also a forest waste. Rice huskd are plantation waste.
4. Only a modest potion of forest waste is utilized properly and usefully.
a) True
b) False
View Answer
Explanation: Forest waste and agricultural wastes can be used as very potential substrates. Only a modest portion of these is used. It is because of logistic and economic factors.
5. What will biotechnological use of wastes eliminate?
a) Pollution
b) Sugar
c) Software junk
d) Rice
View Answer
Explanation: Biotechnological utilization of wastes will eliminate many hazards. It will eliminate a source of pollution. It particular, it will be water pollution.
6. Waste organic materials can be utilized by the use of which technology?
a) Computational biology
b) Bioinformatics
c) Cosmetic technology
d) Biotechnology
View Answer
Explanation: Biotechnology can use wastes as substrates to create meaningful products. It helps in management of organic waste. Organic wastes are generally agricultural or industrial.
7. All processes involve biosystems.
a) True
b) False
View Answer
Explanation: Not all processes involve biosystems. Some processes are effective even if they do not involve biosystems. Examples involve reverse osmosis and ultrafiltration.
8. Which method involves a porous membrane to let the water pass through but not let the salts in?
a) Reverse osmosis
b) Sedimentation
c) Salination
d) Fermentation
View Answer
Explanation: Reverse osmosis involves a porous membrane. It is a method of concentrating liquid solutions. Membrane allows water to pass through but stops the flow of salts.
9. Which method can be used to separate high and low molecular weight compounds in a liquid?
a) Ultrafiltration
b) Reverse osmosis
c) Fermentation
d) Brewing
View Answer
Explanation: Ultrafiltration involves separating high and low molecular weight compounds. The compounds must be present in a liquid medium. High molecular weight compounds are retained back.
10. Which of the following wastes already find fermentation uses?
a) Molasses and whey
b) Molasses and insecticide
c) Manure
d) Fertilizer
View Answer
Explanation: Molasses and whey find considerable fermentation uses. Molasses is a by product of sugar industry. It has a high sugar content of 50%.
11. Whey is obtained during the production of ______
a) Potato dextrose agar
b) Ginger wine
c) Grape syrup
d) Cheese
View Answer
Explanation: Whey is obtained during the production of cheese. It is a byproduct. It is a major fermentation feedstock.
12. Minimal pretreatment of dilution and sterilization of not needed for ________
a) Sugar cane
b) Beet
c) Molasses
d) Lignocellulosic materials
View Answer
Explanation: Sugar cane, beet and molasses are sugary materials. These require dilution and sterilization. Lignocellulosic materials like paper wastes do not require these steps.
Sanfoundry Global Education & Learning Series – Basic Biotechnology.
To practice all areas of Basic Biotechnology, here is complete set of Multiple Choice Questions and Answers.
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