Tag: food production and microbes

Quizzes (0) Questions (24)

Questions Related to food production and microbes

Multiple choice botany components of food balanced diet food production and microbes plant breeding for food production effect on general health diseases caused by changes in lifestyle diet, drugs and disease

____ and ____ are unicellular algae, rich in proteins, that are used as food supplements even by space travellers. 

  1. Chlorella, Spirulina

  2. Gelidium, Gracilaria

  3. Porphyra, Spirogyra

  4. Laminaria, Spirogyra
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chlorella (Green alga), as food supplement is rich in protein and carbohydrates. It yields about 30% proteins, 15% lipids, 30% carbohydrates and 5% ash. Spirulina platensis (blue-green alga) is one of the richest sources of protein and vitamin $B _{2}$. In long range space exploration, scientist have turned to Chlorella and Spirulina to use them as portable oxygen generators and food sources.

Multiple choice botany strategies for enhancement in food production balanced diet food production and microbes plant breeding for food production

250 g of $Methylophilus$ can be expected to produce ______ tonnes of proteins.

  1. 15

  2. 25

  3. 40

  4. 50
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A 250 kg cow produces 200 g of proteins per day. In the same period, 250 g of a microorganisms like Methylophilus methylotrophus because of its high rate of biomass production and growth, can be expected to produce 25 tonnes of protein.

Multiple choice botany strategies for enhancement in food production balanced diet food production and microbes plant breeding for food production

Which of the following can be used for cultivation of SCP?

  1. Animal manure

  2. Straw

  3. Molasses

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Large quantities of single cell proteins like Spirulina can be grown easily on materials like waste water from potato processing plants, straw, molasses, animal manure and even sewage.

Multiple choice botany strategies for enhancement in food production balanced diet food production and microbes plant breeding for food production

Single cell protein can be obtained from 

  1. bacteria

  2. algae

  3. fungi

  4. all of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Single cell protein can be obtained from cells of microorganisms such as yeast, fungi, algae and bacteria which are grown on carbon sources for synthesis. SCP is a protein supplement for animals and humans. Example ; Spirulina produces large quantity of food which are rich in protein, carbohydrates, fats, minerals and vitamins. It also reduces environmental pollution. 

So, the correct option is 'Option D' .

Multiple choice botany strategies for enhancement in food production balanced diet food production and microbes plant breeding for food production

Single cell production is enabled through

  1. Batch operation systems

  2. Continuous operation systems

  3. Discontinuous operation system

  4. Unique operation system
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Single cell protein (SCP) production is most efficiently achieved through continuous operation systems, which allow for a steady state of growth and harvest.

Multiple choice botany strategies for enhancement in food production balanced diet food production and microbes plant breeding for food production

Single cell protein can be obtained from 

  1. Bacteria

  2. Algae

  3. Fungi

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Single cell protein means the protein which can be obtained by the culture of single-celled organisms and these proteins are generally used as dietary supplements. Bacteria, algae, fungus all of them are either single-celled structures or the groups have one or more forms which are single-celled. Thus, all of them form sources of single-celled protein.

So, the correct answer is 'All of the above'.

Multiple choice botany strategies for enhancement in food production balanced diet food production and microbes plant breeding for food production

The extraction of single cell protein is a

  1. Costly process

  2. Microorganisms are present in very high concentration

  3. Must be hydrated to prevent spoilage

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The extraction and processing of single cell protein is generally considered a costly process due to the need for large-scale bioreactors, downstream processing, and purification.

Multiple choice botany strategies for enhancement in food production balanced diet food production and microbes plant breeding for food production

By using single-cell protein, amount of protein that can be produced by algae grown in ponds (per acre) is

  1. 20 tons

  2. 30 tons

  3. 40 tons

  4. 50 tons
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A- Single-cell proteins (SCP) are produced by a range of microorganisms and substrate. They are dried cells of microorganism. When SCP is produced, the microbial products produce sufficient proteinaceous substances that can be utilized as protein supplements for animal feeds or human foods. It is estimated that algae grown in ponds can produce 20 tons (dry weight) of protein, per acre, per year.