Class 8 General Science Notes: - Unit-4: Biotechnology: Solved Exercise (Short Questions and Answers)

(National Book Foundation - New Book/New Syllabus Based on National Curriculum Pakistan 2023-2024 and Onwards)

(Class 8 General Science Notes for 8th Centralized Exam 2023-2024 and onward, FDE, Islamabad)

B. Short questions

Q1. What could be the advantages of microbes-produced dyes over synthetic dyes?

Ans:

The production of microbial dyes costs less. They offer a wide range of new colours and they impart better properties to dyed materials.
Microbes-produced dyes are performed due to their easy use and color variations.
Microbial dyes production is faster than traditional methods.

Q2. Give the advantages of using biodegradable plastics.

Ans:

Bio-degradable plastics are decomposed by bacteria and fungi, So these plastics do not cause pollution.

Q3. What is the significance of fermented food?

Ans:

1. Food produced by the use of microorganisms is more nutritious as they contain essential nutrients like vitamins & minerals.

2. Food produced by the fermentation process have better taste & quality and has longer storage life.

3. Traditional fermented foods are better, faster, and more economical.

Q4. How biotechnology can transform the way of treating diseases?

Ans:

Biotechnology can transform the way of treating diseases by the following:

1. Diagnosis of diseases in a short time.

2. Development of appropriate

3. Better vaccines

4. Gene therapy

Q5. What could be the best solution to mineral deficiency diseases in third-world countries?

Ans:

1. Use of multivitamins and Mineral supplements.

2. Education and support about better diet.

3. Biofortification of food.

Unit-4: Biotechnology: Solved Long Questions and Answers

Class 8 General Science Notes

Source: General Science Book (National Book Foundation, Pakistan)

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