Tag: TIFR Previous Year Question Papers Biology PYQ With Answer Key Download

6. Which of the following is NOT used for the generation of transgenic animals? a. Somatic cell nuclear transfer b. Pronuclear injection c. Embryonic stem cells d. Next-generation sequencing Answer: […]

5. Which of the following statements is NOT a necessary consequence of meiosis? a. Chromosome number remains constant generation after generation. b. Each daughter cell receives the same number and […]

4. Place these steps in temporal order, first to last. 1. Diffusion of neurotransmitter across the synaptic cleft. 2. Binding of neurotransmitter to its receptor. 3. Influx of calcium into […]

3. Which of the following molecules is useful in protein phosphorylation studies? a. α-32P ATP b. β-32P ATP c. γ-32P ATP d. ATP-γ-S γ-32P ATP is the correct answer for […]

2. During growth and division of E. coli, the daughter strand is recognized due to a. Hemimethylation of newly synthesized DNA b. Nicks in newly synthesized DNA c. double stranded […]

1. When antibiotic-sensitive bacteria are spread on a plate containing antibiotic, colonies of resistant bacteria grow. The best explanation for this is: a. the antibiotic is mutagenic b. the antibiotic […]

15. A molecular cage allows the nitrogen of ammonia to become sp2 hybridized (instead of the usual sp3 hybridization). What do you expect the structure of this ammonia molecule to […]

14. What is the correct order of acidity for these compounds? a. (a) < (b) b. (a) = (b) c. (a) > (b) d. It depends on the pH The […]

13. Two equilibria are shown below: The following is true for these equilibria: a. Both (a) and (b) have equal populations of the isomers b. Both (a) and (b) have […]

11. How many chiral carbons does the following structure have when n is even? a. all its carbons are chiral b. n c. n+1 d. n+2 The correct answer is […]