10th class Biology, Chapter 8: Biotechnology MCQs

1. Why are bacteria commonly used in genetic engineering for producing products?

1. (A) They naturally produce the required products
2. (B) They grow quickly and accept human genes ✓
3. (C) They resist all infections
4. (D) They have a human-like immune system

2. In genetic engineering, the first step is:

1. (A) Inserting DNA into the organism
2. (B) Cutting the desired gene from DNA ✓
3. (C) Growing the modified organism
4. (D) Making proteins from the gene

3. Which of these is often used as a vector in genetic engineering?

1. (A) Virus ✓
2. (B) Fungi
3. (C) Yeast
4. (D) Blood cell

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

1. (A) Protein
2. (B) Another bacterium
3. (C) Vector ✓
4. (D) Enzyme

5. In genetic engineering, after inserting the gene, the host cell is allowed to:

1. (A) Mutate randomly
2. (B) Die naturally
3. (C) Multiply and express the gene ✓
4. (D) Produce waste

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

1. (A) Natural DNA
2. (B) DNA copied by mistake
3. (C) DNA joined from two sources ✓
4. (D) DNA destroyed by enzymes

7. A gene for toxin production is inserted into a plant for:

1. (A) Reducing water need
2. (B) Increasing vitamin content
3. (C) Resisting insect attacks ✓
4. (D) Speeding up flowering

8. Genetically modified bacteria produce the following products, except:

1. (A) Hepatitis B vaccine ✓
2. (B) Growth hormone
3. (C) Insulin
4. (D) Interferon

9. Which biotechnology products help against viral infections?

1. (A) Antibiotics
2. (B) Vaccines ✓
3. (C) Clotting factors
4. (D) Growth hormone

10. Golden rice is a genetically modified plant to increase:

1. (A) Protein
2. (B) Vitamin A ✓
3. (C) Iron
4. (D) Calcium

11. If a gene from bacteria is transferred into corn, the advantage is:

1. (A) larger corn size
2. (B) more vitamins
3. (C) faster growth
4. (D) production of natural toxin ✓

12. The term "biotechnology" was first proposed in 1919 by:

1. (A) Ian Wilmut
2. (B) Gregor Mendel
3. (C) Paul Langerhans
4. (D) Karl Ereky ✓

13. The first mammal produced from an adult body cell (1997) was a lamb named:

1. (A) Dolly ✓
2. (B) Polly
3. (C) Molly
4. (D) Daisy

14. The oldest form of biotechnology is:

1. (A) gene cloning
2. (B) fermentation ✓
3. (C) gene editing
4. (D) tissue culture

15. Bread dough rises because yeast produces:

1. (A) water
2. (B) carbon dioxide ✓
3. (C) oxygen
4. (D) nitrogen

16. The antibiotic streptomycin is produced by:

1. (A) Penicillium
2. (B) yeast
3. (C) Streptomyces ✓
4. (D) Lactobacillus

17. Bacteria used in making yogurt and cheese are:

1. (A) Plasmodium
2. (B) Lactobacillus ✓
3. (C) Streptomyces
4. (D) Helicobacter

18. Use of organisms to remove or neutralize pollutants from the environment is called:

1. (A) gene cloning
2. (B) tissue culture
3. (C) bioremediation ✓
4. (D) fermentation

19. Viruses that can enter bacteria are called:

1. (A) antibodies
2. (B) bacteriophages ✓
3. (C) plasmids
4. (D) vectors only

20. Making many copies of the donor's gene in a bacterial colony is called:

1. (A) gene cloning ✓
2. (B) gene editing
3. (C) gene therapy
4. (D) mutation