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| # | Question | Subject and topic | Difficulty |
|---|---|---|---|
| 1541 | In Griffith's experiment, which injection killed the mice? | Biology/Biological Studies/Biotechnology/Biochemistry Search for the genetic material |
Easy |
| 1542 | Why was ³⁵S used to label phage protein in the Hershey–Chase experiment? | Biology/Biological Studies/Biotechnology/Biochemistry Search for the genetic material |
Medium |
| 1543 | Avery, MacLeod and McCarty found that transformation was blocked by which enzyme? | Biology/Biological Studies/Biotechnology/Biochemistry Search for the genetic material |
Medium |
| 1544 | Why is DNA preferred over RNA as the store of genetic information? | Biology/Biological Studies/Biotechnology/Biochemistry Search for the genetic material |
Hard |
| 1545 | Which bond links adjacent nucleotides in a DNA strand? | Biology/Biological Studies/Biotechnology/Biochemistry DNA structure and packaging |
Easy |
| 1546 | A nucleosome core consists of DNA wrapped around | Biology/Biological Studies/Biotechnology/Biochemistry DNA structure and packaging |
Easy |
| 1547 | A double-stranded DNA sample has 20% adenine. What is the percentage of guanine? | Biology/Biological Studies/Biotechnology/Biochemistry DNA structure and packaging |
Medium |
| 1548 | Why are histone proteins positively charged? | Biology/Biological Studies/Biotechnology/Biochemistry DNA structure and packaging |
Medium |
| 1549 | If the distance between two consecutive base pairs is 0.34 nm, what is the approximate total length of DNA in… | Biology/Biological Studies/Biotechnology/Biochemistry DNA structure and packaging |
Hard |
| 1550 | Which enzyme joins the discontinuously synthesised fragments of the lagging strand? | Biology/Biological Studies/Biotechnology/Biochemistry DNA replication |
Easy |
| 1551 | Meselson and Stahl separated DNA of different densities using | Biology/Biological Studies/Biotechnology/Biochemistry DNA replication |
Easy |
| 1552 | In the Meselson–Stahl experiment, what was observed after one generation in ¹⁴N medium? | Biology/Biological Studies/Biotechnology/Biochemistry DNA replication |
Medium |
| 1553 | Why is DNA synthesis continuous on one strand but discontinuous on the other? | Biology/Biological Studies/Biotechnology/Biochemistry DNA replication |
Medium |
| 1554 | E. coli cells with fully ¹⁵N-labelled DNA are grown in ¹⁴N medium for three generations. What fraction of DNA… | Biology/Biological Studies/Biotechnology/Biochemistry DNA replication |
Hard |
| 1555 | In eukaryotes, which RNA polymerase transcribes the precursor of mRNA (hnRNA)? | Biology/Biological Studies/Biotechnology/Biochemistry Transcription |
Easy |
| 1556 | The removal of introns and joining of exons in hnRNA is called | Biology/Biological Studies/Biotechnology/Biochemistry Transcription |
Easy |
| 1557 | The coding strand of a gene reads 5′-ATGCCA-3′. What will be the sequence of the RNA transcribed from it? | Biology/Biological Studies/Biotechnology/Biochemistry Transcription |
Medium |
| 1558 | In bacteria, which factor helps RNA polymerase to terminate transcription? | Biology/Biological Studies/Biotechnology/Biochemistry Transcription |
Medium |
| 1559 | Why can translation begin before transcription is complete in bacteria but not in eukaryotes? | Biology/Biological Studies/Biotechnology/Biochemistry Transcription |
Hard |
| 1560 | Which codon acts as the start codon and also codes for methionine? | Biology/Biological Studies/Biotechnology/Biochemistry Genetic code and translation |
Easy |