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P G Level Biotechnology MCQ - SET Biotechnology Questions and Answers 11-20

11. The map generated by interrupted conjugation is marked off in units of

A) Frequency of mutation

 B) Average number of crossing over

C) Length of DNA transferred 

D) Time required for transfer

12. Choose the statements which is/are true?

1. If two transposons in opposite orientation on the same chromosome pair and cross over, the segments between them will be inverted

2. If two transposons in the same orientation on the same chromosome pair and cross over, the segments between them will be deleted

3. If two transposons in opposite orientation on the same chromosome pair and cross over, the segments between them will be deleted

4. If two transposons in the same orientation on the same chromosome pair and cross over, the segments between them will be inverted

A) 1&4 

B) 1&2 

C) 2 & 3 

D) 1 only

13. In a randomly mating population, a gene P has three alleles, P1, P2, and P3 with frequencies 0.2, 0.3 and 0.5 respectively. The combined frequencies of all heterozygote in this population are:

A) 2 B) 1 C) 0.03 D) 0.62

14. Haemophilia is caused by X-linked recessive allele. In a particular population the frequency of males with Haemophilia is 1/5000. Calculate the expected frequency of females with Haemophilia:

A) 0.0002 B) (0.0002)2 C) 0.0004 D) 0.0001

P G Level Biotechnology MCQ - SET Biotechnology Questions and Answers

15. Immediately after the synthesis of mRNA:

A) Methyl guanosine is added to 5’ end and Poly (A) tail is added to 3’ end of mRNA

B) Methyl guanosine is added to 3’ end and Poly (A) tail is added to 5’ end of mRNA

C) Methyl cytosine is added to 3’ end and Poly (A) tail is added to 5’ end of mRNA

D) None of the above reactions will happen

16. Choose the statements which is/are correct about protein glycosylation:

1) The N-linked glycosylation begins in the ER and continues in the Golgi-complex

2) The N-linked glycosylation takes place exclusively in the Golgi-complex

3) The O-linked glycosylation begins in the ER and continues in the Golgi-complex

4) The O-linked glycosylation takes place exclusively in the Golgi-complex

A) 1 only B) 2 & 3 C) 4 only D) 1 & 4

17. During cancer treatment hair loss is a common. The reason behind this is:

1) Skin is comparatively more vascularized than other tissues

2) The therapeutic agent is a keratin inhibitor

3) The therapeutic agent inhibits the proliferating cells in the hair

4) The therapeutic agent activates new hair formation

A) Only 1 is correct 

B) Only 2 & 3 are correct

C) Only 3 is correct 

D) Only 3 & 4 are correct

18. Slow-twitch (type I fibers) are thinner, with a denser capillary web, and appear red owing to the existence of a great amount of-----.

A) Myoglobin

 B) Haemoglobin

C) Low glycogen levels 

D) High mitochondrial numbers

19. When freshly isolated intact mitochondria were incubated with ADP and inorganic phosphate neither the oxygen consumption nor the ATP synthesis could be detected. Addition of succinate resulted in increased oxygen consumption as well as ATP synthesis with time. Subsequent addition of cyanide to this system will result in whichone of the following?

A) Both oxygen consumption and ATP synthesis are inhibited

B) Oxygen consumption continues but ATP synthesis is inhibited

C) Oxygen consumption is inhibited but ATP synthesis continues

D) Both oxygen consumption and ATP synthesis continue

20. Saccharose is a synonym for------.

A) Glucose B) Sucrose C) Fructose D) Starch

Learn more: Biotechnology MCQ Topic wise

Answers:

11. D) Time required for transfer 

12. B) 1&2 

13. D) 0.62

14. B) (0.0002)2 

15. A) Methyl guanosine is added to 5’ end and Poly (A) tail is added to 3’ end of mRNA

16. D) 1 & 4

17. C) Only 3 is correct 

18. A) Myoglobin

19. A) Both oxygen consumption and ATP synthesis are inhibited

20. B) Sucrose

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