Section B: True / False (5 marks)1.Primase has a DNA dependent RNA polymerase activity.2.7-methylguanosine cap is added to the 5' end of the DNA after replication in eukaryotes.3.snRNA is produced in transcription.4.Initiator tRNA enter ribosome with the help of EF-Tu.5.At low oxygen partial pressure Po2, myoglobin has lower oxygen affinity than hemoglobin.

True or false statement Primase is a kind of RNA polymerase that is involved in the replication of…

Answered: Section B: True / False (5 marks) 1.…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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10. Why does a cDNA copy of a eukaryotic mRNA gene need to be made in order to determine the expressed protein sequence? Group of answer choices Genomic DNA is methylated and cannot be used as a template Genomic DNA is less stable than cDNA and is therefore harder to work with The genomic DNA sequence in eukaryotes contains introns which need to be removed first Genomic DNA is too long so the shorter mRNA copy is used The 5’ cap gets in the way of protein sequencing
1. Below is the abstract from a journal article "De novo methylation of CpG island sequences in human fibroblasts overexpressing DNA (cytosine-5-)-methyltransferase" by Vertino et al. Read it and answer the following questions. Recent studies showing a correlation between the levels of DNA (cytosine-5-)- methyltransferase (DNA MTase) enzyme activity and tumorigenicity have implicated this enzyme in the carcinogenic process. Moreover, hypermethylation of CpG island-containing promoters is associated with the inactivation of genes important to tumor initiation and progression. One proposed role for DNA MTase in tumorigenesis is therefore a direct role in the de novo methylation of these otherwise unmethylated CpG islands. In this study, we sought to determine whether increased levels of DNA MTase could directly affect CpG island methylation. A full-length CDNA for human DNA MTase driven by the cytomegalovirus promoter was w ww constitutively expressed in human bro lasts. Individual…
10
1. Which of the following introns are usually removed from hnRNA only by spliceosomes? non-transcribed spacers Type II introns viroids Type I introns hammerhead ribozymes
Q1. Transcribe and Translate the following DNA.Be sure to label which sequence is your transcript and which is your translated product. Be sure to label all 5' and 3' and NH3 and COOH terminals. Transcriptional start site is highlighted Coding 5’CCTGACGATGCACAAACCATATTAGAA 3’ Template 3’GGACTGCTACGTGTTTGGTATAATCTT 5’ Open ReadingFrame Protein
True or False
BONUS: Why can't RNA viruses use cellular RNA Polymerase to copy their genetic information? Because cellular RNA Polymerases are O RNA Dependent RNA Polymerase O RNA Dependent DNA Polymerase O DNA Dependent RNA Polymerase O DNA Dependent DNA Polymerase prt s home
7. F. State if/how Remedios' mutation changes the amino acid sequence and describe the effect that change has, if any, on the protein.
10 Which of the following classes of ribonuclease is known to cleave double-stranded RNA? A.RNase III B.RNase IV C.RNase I D.RNase II 1 分 11 Which of the following is a mammalian translation initiation factor that forms a complex with GTP and met-tRNA? A.eIF5B B.eIF2B C.eIF2 D.eIF3 1 分 12 The E. coli ( ）gene codes for β-galactosidase.

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