10th Class Biology Chapter 8 TestBIOTECHNOLOGY

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. If farmers mostly grow GM crops, traditional and naturally diverse varieties might become ......

   1. Common and cheap

   2. Stronger and healthier

   3. Rare

   4. Poisonous

2. In genetic engineering, "recombinant DNA" means:

   1. Natural DNA

   2. DNA copied by mistake

   3. DNA joined from two sources

   4. DNA destroyed by enzymes 

3. Yeast plays a crucial role in:

   1. Bread making

   2. Ethanol Production

   3. Both a and b

   4. None of these

4. Which biofules are produced in industrial biotechnology?

   1. Ethanol

   2. Biodiesel

   3. Biogas

   4. All of these

5. A small-circular DNA molecules present in some bacteria as:

   1. Plasmid

   2. Bacteriophage

   3. Hormone

   4. Vaccine

6. Modified bacteria can be used in environmental biotechnology to extract minerals such as ......

   1. Gold and silver

   2. Iron and calcium

   3. Copper and uranium

   4. Carbon and sulfur

7. Modern biotechnology emerged after the invention of the structure and function of DNA in which year?

   1. 1919

   2. 1953

   3. 1997

   4. 2000

8. In genetic engineering, the desired gene is usually inserted into a bacterium by using:

   1. Protein

   2. Another bacterium

   3. Vector

   4. Enzyme

9. Yeasts ferments sugars from crops like sugarcane or corn to produce

   1. Ethanol

   2. Carbon dioxide

   3. Oxygen

   4. Both a and b

10. Some people worry that consuming genetically modified (GM) foods could primarily cause ...... .

    1. Instant weight loss

    2. Allergic reactions or long-term health problems

    3. Vitamin C deficiency

    4. Bacterial infections