mcqs on dna replication and repair

Therefore, DNA replication requires that the DNA is loosened and the double helix is unwound.

b) DNA polymerase β d. Photolyase The synthesis of DNA by DNA polymerase occurs in the, A. AP endonuclease, DNA ligase, DNA polymerase. Click it to see your results. The mutation does not alter production of the enzyme. D. none of these, 2. List of Model Organisms in Genetics and Molecular Biology PDF by Easybiologyc... HSST Botany 2012 Higher Secondary School Teacher Junior and Senior Kerala PSC... MCQ on Ecology: Part 1: Ecology Introduction by Easybiologyclass, MCQ on Fatty Acids With Answer Key and Explanations (Biochemistry MCQ 009).

The protein would be only slightly altered because a single amino acid would be miscoded.

a. MutH

DNA Damage, Mutation, and Repair Chapter Exam Instructions.

How would a shift in the reading frame likely alter the resulting protein? b) DNA, RNA and protein Based on your results, we'll create a customized Test Prep Plan just for you! Protein modifications. Looks like you’ve clipped this slide to already. MCQ on RNA synthesis (Transcription) and processing, 7- b) providing View Answer, 6. DNA Repair Mechanism MCQ with Answer Key:2015 Nobel Prize in Chemistry: Mechanistic Studies of DNA Repair: Molecular Biology Model Multiple Choice Questions fo… Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. This set of Biochemistry Multiple Choice Questions & Answers (MCQs) focuses on “DNA Replication”. Ionizing radiation, such as an X-ray, causes free radicals to form. DNA is bound to proteins in the nucleus and is tightly packed. Which is the DNA polymerase involved in BER, 12. A. Helicase An apyrimidinic or apurinic (AP) site forms in which type of DNA repair? What is the relationship between a base and a nucleotide? ... Topoisomerise enzymes open up the double stranded DNA at the replication fork d) Topoisomerise enzymes join the Okazaki fragments together with phosphodietster bonds Which of the following lacks 3′-5′ exonuclease activity? This is the currently selected item. Your email address will not be published. a. Photoligase 1,00 bases per second

It occurs in a unidirectional … Contact us by phone at (877) 266-4919, or by mail at 100 View Street #202, Mountain View, CA 94041. a. DNA helicase I

The enzyme involved in the process is, 9. In nucleotide excision repair mechanism which of the following proteins first recognize DNA lesion?

B. DNA gyrase

If the mutation has a negligible effect on the function of a gene, it is known as a ____________

We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. View Answer. 5′ to 5′ direction View Answer, 5. Photoreactivation because it recognises and removes large bulky areas of DNA damage. See our User Agreement and Privacy Policy.

d. DNA helicase IV back By decreasing the likelihood of finding food, By increasing the likelihood of a replication error. DNA glycosylase is an enzyme involved in base excision repair. b) DNA ligase The additional covalent bonds join random nucleotides together. The free radicals break the covalent bonds joining DNA nucleotides together. breaks repaired D. 3′ to 3′ direction, Your email address will not be published. What causes DNA mutations and how do they happen?

18) DNA polymerase III holoenzyme possesses: 19) Which of the following statement is true regarding an enzyme DNA polymerase that catalyzes the elongation of complementary DNA strand? 10 bases per second C. T4 DNA ligase to them later with the "Go To First Skipped Question" button. During DNA replication in prokaryotes, synthesis begins on the circular chromosome, A. always at the same place b) Photo reactivation When you have completed the practice exam, a green submit button will

The enzyme photolyase is used in what method of repair? DNA is bound to proteins in the nucleus and is tightly packed. Please take 5 seconds to Share. Choose your answers to the questions and click 'Next' to see the next set of questions. Which of the following chemicals induce depurination, 3.

For more Questions and Resources for your CSIR/ICMR/DBT/ICAR/UGC/JRF NET Life Science Defective mismatch repair genes in humans have been linked with _____.

7. They chemically change the structure of nucleotide bases, causing mispairing. © copyright 2003-2020 Which of the following mechanism of DNA polymerase helps in preventing error during, 4. a. Photoreactivation back Earn Transferable Credit & Get your Degree. Sanfoundry Global Education & Learning Series – Biochemistry. b) Frame shift mutation A type of point mutation that alters the length of the DNA strand is _____.

b. DNA helicase II B. Taq DNA polymerase Biology Multiple Choice Questions and Answers for Different Competitive Exams, © var creditsyear = new Date();document.write(creditsyear.getFullYear()); Which of the following form is predominantly expressed in cells, 11) Which of the followings are the characteristic feature of DNA replication. Point mutations made during DNA replication, Point mutations caused by chemical mutagens, Double-strand breaks in DNA caused by chemical mutagens, Double-strand breaks in DNA made during replication. The protein would be greatly altered because multiple amino acids would be miscoded. d) DNA polymerase γ Cell division involves the duplication of a cell's entire DNA so that two genetically identical daughter cells arise from a single cell. Transcription and mRNA processing. MCQ Biology - Learning Biology through MCQs, AllRightsReserved. c. MutL ***Best viewed in Google Chrome and Mozilla firefox***. Presenter Kelompok 3 (Penyanggah Kelompok 5): Topik Mutations2. 8. 1. 3′ to 5′ direction c) Removal of incorrect base

Which of the following is a bypass repair system, 14. umu C, umu D gene family and Rec A proteins are involved in, 15. a) Silent mutation 5. DNA REPLICATION SOLVED MCQs with explanation (1-27) : DNA REPLICATION SOLVED MCQs with explanation (1-27) BY Dr Ichha Purak University Professor Department of Botany Ranchi Women’s College,Ranchi PowerPoint Presentation : Which of the following reactions is required for proofreading (i.e.

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