Enzyme that is responsible for unwinding of DNA is?
Correct Answer: Helicase
Description: ANSWER: (C) HelicaseREF: Lippincott's biochemistry 3rd Ed page: 400PROTEINS INVOLVED IN REPLICATION:PROTEINFUNCTIONHelicaseCauses unwinding of DNA using ATPSSB (Single strand binding protein)Keeps two strands separate , prevents renneiling of twostrandsTopisomerase I and IIThey have both nuclease (strand cutting ) and ligase activity , hence they relieve torsional strain that results from helicase induced unwindingDNA primaseInitiates synthesis of RNA primerDNA polymeraseDeoxyribonucleotide polymerisationDNA ligase /nick sealing enzymeSeals the single stranded nick between nascent chains and okazaki fragments
Category:
Biochemistry
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