3. In response to a drug, changes in protein levels wereexamined in a cell line. A pulse chase experiment wasperformed using labeled methionine. In comparison, to untreated samples, the following […]
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CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Cycloheximide: The Antibiotic That Specifically Inhibits the Eukaryotic 80S Ribosome
Among the following which antibiotic is inhibitor of 80S ribosome? (1) Tetracycline (2) Streptomycin (3) Cycloheximide(4) Chloramphenicol Antibiotics are widely known for their ability to inhibit bacterial protein synthesis by […]
CSIR NET Life Science Previous Year Questions and Solution on EUKARYOTIC GENE REGULATION
GAL Gene Regulation in Yeast: Identifying the False Statement
Which one of the following statements about GAL gene expression is FALSE? (1) GALA is a positive regulator of GAL genes (2) The UAS region that regulates the GAL geneexpression […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Erythromycin Inhibits Bacterial Protein Synthesis by Blocking Elongation After Initial Codons Are Translated
Which one of the following statements is correct in the context of erythromycin-mediated inhibition of protein synthesis in bacteria? (1) Erythromycin inhibits protein synthesis at the step of elongation, but […]
CSIR NET Life Science Previous Year Questions and Solution on EUKARYOTIC GENE REGULATION
Matching Transcription Factors to Their DNA-Binding Domains: A Guide to Protein-DNA Recognition
1. Which of the options correctly matches the proteins involved in transcription (Column A ) with the DNA they carry ( Column B) Column A Column B A. TFIIIA i. […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Which one of the following statements is correct in the context of erythromycin-mediated inhibition of protein synthesis in bacteria? (1) Erythromycin inhibits protein synthesis at the step of elongation, but […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
How Erythromycin Inhibits Bacterial Protein Synthesis: Binding to the 50S Ribosomal Subunit
8. Erythromycin is an inhibitor of protein synthesis. It acts by: (1) binding to 30S subunit of bacterial ribosome, thus inhibiting binding of aminoacyl-tRNAs. (2) binding to 50S subunit of […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
How Tetracycline Antibiotics Inhibit Protein Synthesis: Role of the 30S Ribosomal Subunit
7. Tetracycline’s are a group of broad-spectrum antibiotics against bacterial resistance. Tetracycline antibiotics are protein synthesis inhibitors and exerts its effect by binding to (1) 30 S subunit of ribosome […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Puromycin: The Antibiotic That Mimics the 3′ End of Charged tRNA
6.An antibiotic that resembles the 3′ end of a charged tRNA molecule is: (1) Streptomycin(2) Sporsomycin (3) Puromycin (4) Tetracycline Antibiotics have revolutionized medicine and molecular biology by targeting critical […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Bacterial Transcriptional Regulation Mechanisms to Operons and Processes
42. Contents in Column I and II are with respect to bacterial transcriptional regulation. Column I Column II i. Positive regulation by Camp a. Ara operon ii. Short abortive b. […]
