Reverse transcriptase is a RNA dependent DNA polymerase. Which of the following uses reverse transcriptase?
Correct Answer: Hepatitis B virus
Description: Ans. b. Hepatitis B virus (Ref: Ananthanarayan 9/e p544, 8/e p540; Harrison 19/e p2005; Robbins 9/e p831-832)Hepatitis B virus uses reverse transcriptase.Hepatitis B virus: A polymerase (Pol) that exhibits both DNA polymerase activity and reverse transcriptase activity. Genomic replication occurs via an intermediate RNA template, through a unique replication cycle: DNA - RNA - DNA. "--Robbins 9/e p832"The third of the HBV genes is the largest, the Pgene, which codes for the DMA polymerase: as noted above, this enzyme has both DMA-dependent DMA polymerase and RMA-dependent reverse transcriptase activities. "--Harrison 19/e p2005Hepatitis B virus Genes & AntigensGeneAntigen ProducedC geneHBcAg (Hepatitis B core antigen)QC & Pre C genesHBeAg (Hepatitis B e antigen) QS geneHBsAg (Hepatitis B surface antigen): large, middle & small HBsAg QP geneDNA polymerase (pol) & reverse transcriptase QX geneHBxAg: virus replication & transcriptional transactivator Q
Category:
Microbiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now