Helicase Study guides, Revision notes & Summaries

Technologist in Molecular Biology, MB(ASCP) board exam prep 2024 with 100% Correct Answers Pyrimidine - Answer ️️ -One carbon ring Cytosine, Thymine, Uracil What is the function of mRNA? - Answer ️️ -Carries genetic info out of nucleus Transcript translated to protein What is the function of tRNA? - Answer ️️ -Carries aa to ribosome Anticodon pairs with codon on mRNA strand What is the function of rRNA? - Answer ️️ -part of ribosome structure most abundant RNA coordina...

uestion Number Answer Mark 1(a) The only correct answer is C a place where an organism lives A is incorrect because a group of organisms of different species living in the same area is a community B is incorrect because a group of organisms of the same species living in the same area is a population D is incorrect because the role of an organism is its niche (1) Question Number Answer Additional guidance Mark 1(b)(i) A description that makes reference to three of the following • ...

IB Biology Paper 2 Section B Questions and Answers Already Passed Draw a labelled diagram of the human adult male reproductive system. [5 marks] a. scrotum - shown around testes; b. testes/testis/testicles - shown inside scrotum; c. epididymis - shown adjacent to testis and connected to sperm duct; d. sperm duct/vas deferens - double line connecting testis/epididymis to urethra; e. seminal vesicle - sac shown branched off sperm duct (not off the urethra); f. prostate gland - shown positi...

ASU BIO 181 Exam 2 (modules 7-12) Questions & Answers 2024 Draw the sugar in DNA and label the carbons as discussed in the lecture. Then circle the carbon that is different in RNA. - ANSWER-... Which enzyme unwraps the double helix? - ANSWER-Helicase Which enzyme is used first to permit DNA polymerase III to begin replicating the 3' strand? - ANSWER-Primase The double helix of DNA is wrapped around 1 3/4 times around which of these components? - ANSWER-Nucleosome In the lagging...

Section I (Multiple-Choice Questions) Time: 80 minutes 100 questions Directions: Each of the following questions or statements is followed by five possible answers or sentence completions. Choose the one best answer or sentence completion. 1. In which of the following are the nuclear activities most opposite? A. prophase and metaphase B. prophase and anaphase C. prophase and telophase D. metaphase and anaphase E. metaphase and telophase 2. A severe storm forms a new river that...

Which strand is produced more rapidly? - ANSWER-Leading strand During DNA replication in the lagging strand there is production of this component? - ANSWER-Okazaki fragment How many "stop" codons exist? - ANSWER-3 The double helix of DNA is wrapped about 1¾ times around which of these components? - ANSWER-Nucleosome Which enzyme unwraps the double helix? - ANSWER-Helicase In the ribosome, what is the name of the bond that links one amino acid to the next? - ANSWER-peptide bonds...

Why do helicase and gyrase need to work together? correct answers Helicase unwinds DNA and gyrase relieves the torsional strain. Match the name of the DNA repair mechanism with the correct description. Functions with DNA replication to remove incorrect nucleotides from the nascent strand. Requires an endonuclease to remove an abasic nucleotide before DNA Pol I can replace a portion of the strand. Is needed to repair chemical damage in DNA effecting more than one nucleotide, such as c...

Honors Biology EOC (Units 1-5) with Complete Solutions What is the role of DNA helicase in DNA replication? DNA helicase unwinds the DNA double helix, allowing the strands to be copied. How does the endosymbiotic theory explain the origin of mitochondria? The endosymbiotic theory suggests that mitochondria originated from free-living prokaryotic cells that were engulfed by a host cell. Why are hydrogen bonds important in the structure of water? Hydrogen bonds give water its un...

DNA Replication - ANSWERDNA helicase breaks hydrogen bonds. Each strand acts as a template. Free nucleotides attach. Complementary base pairing occurs- AT and CG. DNA polymerase joins nucleotides. Hydrogen bonds reform. Semi-conservative replication- new DNA molecule contains one old and one new strand Transcription - ANSWERDNA helicase breaks hydrogen bonds between DNA strands. One strand acts as a template. RNA nucleotides attract to exposed complementary bases on DNA. RNA polymerase joins ...

Helicase Ans- Catalyzes ATP-dependent unwinding of DNA double helices What is the helicase in E. Coli? Ans- DNAB Single-Stranded Binding Protein Ans- Binds to unwound strands of DNA to prevent reannealing DNA Polymerase Ans- Enzyme responsible for DNA replication Uses ssDNA as a template and makes a complimentary strand by polymerizing deoxynucleotides Synthesis in 5' to 3' direction List the DNA polymerases in E. Coli Ans- Pol I, II, III DNA pol I Ans- Removes RNA primers and f...