Match the enzyme (Column I) with its corresponding function (Column II).Column I Column II P. Primase 1. RNA dependent RNA synthesis Q. Reverse transcriptase 2. DNA dependent DNA synthesis R. RNA Replicase 3. RNA dependent DNA synthesis S. DNA Polymerase III 4. DNA dependent RNA synthesis
Enzyme Function Matching Explained
This question requires matching enzymes listed in Column I with their correct biological functions from Column II. Let's analyze each enzyme:
Primase Function: DNA Dependent RNA Synthesis
- Primase synthesizes short RNA primers. These primers are essential for DNA polymerase to start synthesizing new DNA strands. Therefore, Primase performs DNA dependent RNA synthesis. This corresponds to option 4 in Column II.
Reverse Transcriptase Function: RNA Dependent DNA Synthesis
- Reverse transcriptase is an enzyme commonly found in retroviruses. It synthesizes a DNA strand using an RNA molecule as a template. This process is known as RNA dependent DNA synthesis. This corresponds to option 3 in Column II.
RNA Replicase Function: RNA Dependent RNA Synthesis
- RNA replicase (also known as RNA-dependent RNA polymerase) is an enzyme that synthesizes RNA from an RNA template. This is crucial for the replication of many RNA viruses. The function is RNA dependent RNA synthesis. This corresponds to option 1 in Column II.
DNA Polymerase III Function: DNA Dependent DNA Synthesis
- DNA Polymerase III is the primary enzyme responsible for DNA replication in prokaryotes. It synthesizes new DNA strands by adding nucleotides to a DNA template. This function is DNA dependent DNA synthesis. This corresponds to option 2 in Column II.
Summary of Enzyme-Function Pairs
Based on the analysis, the correct matches are:
- P. Primase - 4. DNA dependent RNA synthesis
- Q. Reverse transcriptase - 3. RNA dependent DNA synthesis
- R. RNA Replicase - 1. RNA dependent RNA synthesis
- S. DNA Polymerase III - 2. DNA dependent DNA synthesis
This corresponds to the matching P-4, Q-3, R-1, S-2.
Important Questions from Replication Transcription Splicing and Translation
Messenger RNAs (mRNAs) translate to generate polypeptides and the translation terminates at the UGA, UAG or UAA stop codons. The AGA codon acts as additional stop codon in the mitochondria. The longest possible polypeptide(s) that can be hypothetically translated in the cytosol and/or mitochondria, from the given full length mRNA sequence (36 nucleotides) is/are
5'-AACACCAUGACCCAUGUGGCGAGACGGUAGUUAAAA- 3'
- Which of the following statements about initiation of DNA replication in eukaryotes is/are true?
Match the drugs in Group I with their mechanism of action in Group II.
Group I Group II P) Paclitaxel 1) Inhibits protein translation Q) Colchicine 2) Inhibits microtubule depolymerization R) Etoposide 3) Inhibits DNA replication S) Methotrexate 4) Alkylates DNA 5) Inhibits dihydrofolate reductase 6) Inhibits microtubule polymerization Which of the following statements regarding the below mentioned mRNA sequence is/are TRUE?
5`-UGAUGAGCCUUAACCGGGAACGAAUUUAAG-3`
- Eukaryotic transcription is carried out by
