Match the terms in Group I with their associated functions in Group II. Group I Group II P. Shine-Dalgarno sequences 1. Aminoacylation of tRNA Q. Leucine zipper 2. Gene silencing R. Aminoacyl tRNA synthetase 3. Ribosome binding and facilitation of translation initiation S. RNA interference (RNAi) 4. Transcription factors
Matching Molecular Biology Terms and Functions
This question requires matching specific biological terms from Group I with their correct functions listed in Group II. Let's analyze each term:
Group I Terms and Group II Functions
| Group I Term | Explanation | Group II Match | Function |
| P. Shine-Dalgarno sequences | These sequences in mRNA help recruit the ribosome to the correct starting point for protein synthesis. | 3 | Ribosome binding and facilitation of translation initiation |
| Q. Leucine zipper | A structural motif in proteins that often facilitates the dimerization of transcription factors, aiding DNA binding. | 4 | Transcription factors (as this motif is common in them) |
| R. Aminoacyl tRNA synthetase | These enzymes attach the correct amino acid to its corresponding tRNA molecule. | 1 | Aminoacylation of tRNA |
| S. RNA interference (RNAi) | A process using small RNA molecules to reduce gene expression, typically by degrading mRNA. | 2 | Gene silencing |
Final Matching Summary
Based on the analysis, the correct pairings are:
- P matches with 3
- Q matches with 4
- R matches with 1
- S matches with 2
This corresponds to the option P-3, Q-4, R-1, S-2.
Important Questions from Regulation of Gene Expression
- Which of the following conditions induce(s) the expression of $ \beta$-galactosidase gene in the lac operon?
Determine the correctness or otherwise of the following Assertion [a] and the Reason [r].
Assertion [a]: In multicellular organisms, cells of different lineages have different gene expression profiles.
Reason [r]: Alternative splicing is the only mechanism to generate protein diversity.- The event(s) that lead(s) to inactivation of tumor suppressor genes in cancer cells is(are)
- Which of the following statement(s) is(are) CORRECT regarding the $lac$ operon in $E. coli$ when grown in the presence of glucose and lactose?
Determine the correctness or otherwise of the following Assertion [a] and the Reason [r]
Assertion: Ab initio gene finding algorithms that predict protein coding genes in eukaryotic genomes are not completely accurate.
Reason: Eukaryotic splice sites are difficult to predict.
