Biology
14th Edition
ISBN: 9781266243547
Author: Mader, Sylvia S.
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 12.4, Problem 2CYP
Describe the three major modifications that occur during the processing of an mRNA.
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Describe the various post-transcriptional and post-translational modifications that occur during the transition from pre-mRNA to mature protein.
Define the role of mRNA localization and translational control ?
Describe the post-transcriptional modifications that occur in mRNA and tRNA.
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- Explain briefly how translation is initiated from a) prokaryotic mRNA and b) eukaryotic mRNA. Include names of any relevant sequences on the mRNA, proteins involved, including ribosomal subunits.arrow_forwardb) In eukaryotes, the newly synthesized MRNA undergoes modifications before it is transported across the nuclear membrane into the cytoplasm. Outline any two of the three modifications.arrow_forwardDiscuss the three steps of Transcription (Initiation, Elongation, Termination).arrow_forward
- Define, explain, and differentiate between, the processes of transcription and translation. What enzymes or sub-cellular structures are responsible for carrying out these processes?arrow_forwardName the three main stages of pre-mRNA processing. Explain the importance of each of the stages of pre-mRNA processing.arrow_forwardDefine both transcription and translation. In addition, describe the role(s) of each of the following in the processes of gene expression and protein synthesis: DNA, mRNA, tRNA, rRNA, ribosome(s), RNA polymerase, codon, anticodon, amino acid(s) and polypeptide(s). Be detailed in your answer.arrow_forward
- Which statement is false: A) Each type of protein ( ex: hemoglobin vs trypsionngen) varies in the length and amino acid sequence of its peptide B) After the rpocess of transcription is complete, the mRNA that is produced will continue being tranlsated by ribosomes for the rest of the cells life. mRNA never breaks down C) A ribosome will bind to an mRNA and will translate the sequence by reading one codon at a time and adding one amino acid to the peptide chain. It will stop the translation once it encounters a stop codon D) The gene for a protein provides the information on the legth of the peptide, along w the amino acid sequence so the protein can be synthesized by a ribosome E) Once mRNA has left the nucleus, ribosomes will bind to it and will follow the instructions in its sequence to make the new protienarrow_forwardDefine about steady-state level of an mRNA ?arrow_forwardExplain three types of post-transcriptional modifications to RNA.arrow_forward
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