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Biology 303 EXAM II 3/14/00 NAME
Biology 303 EXAM II 3/14/00 NAME

... cis-acting, variable orientation, variable position trans-acting, fixed position, fixed orientation cis-acting, fixed position, fixed orientation trans-acting, variable position, fixed orientation ...
Document
Document

... In this module you will investigate protein synthesis, a process in which cells build proteins. Translation is the term used to describe this process, as the sequences of DNA nucleotides are transcribed and translated by a various forms of RNA into the specific protein coded for by that gene sequenc ...
Biology 303 EXAM III
Biology 303 EXAM III

... 1. there are more codons than amino acids. 2. there are more amino acids than codons. 3. different organisms use different codons to encode the same amino acid. 4. it frequently goes on drinking binges. ...
CST Review PowerPoint
CST Review PowerPoint

... genes, but other DNA sequences have structural purposes, or are involved in regulating the use of this genetic information. ...
13 Transcription and translation
13 Transcription and translation

Document
Document

... complex as ssRNAs and initiate destruction of all cellular RNAs that share homology to the dsRNA. RNAi has been incredibly useful to researchers because it can be used to reduce the expression of genes that are tough to mutate. TFIID is a complex of proteins within the basal/general transcriptional ...
Review Questions Chapter 12 Review Sheet
Review Questions Chapter 12 Review Sheet

... noses, mouths, eyes, etc.) In addition, proteins are enzymes and therefore regulate many of the chemical reactions in our bodies o. After the polypeptide is formed what path might it take in the cell before it is actually finished and functional? The polypeptide may associate with other polypeptides ...
Chapter 12 DNA and RNA ANSWER KEY
Chapter 12 DNA and RNA ANSWER KEY

... tend to be individually controlled and their regulatory sequences are much more complex. 5. Organisms that are more complex, such as eukaryotes, have cells that are specialized for specific functions. Gene regulation needs to be more complex to produce these specialized cells for complex organisms. ...
Benchmark 1 Review sheet
Benchmark 1 Review sheet

... Biology Benchmark 1 Review Protein Synthesis 3.1.2 1. Distinguish between transcription and translation. ...
Slayt 1
Slayt 1

...  M-RNA is not polyadenylated  No IRES in eukaryotes  No introns in prokayotes (except some bacteriophages) ...
Biology 303 EXAM III
Biology 303 EXAM III

... 1. there are more codons than amino acids. 2. there are more amino acids than codons. 3. different organisms use different codons to encode the same amino acid. 4. it frequently goes on drinking binges. ...
Name Ch 12 Study Guide
Name Ch 12 Study Guide

... 11) Who was Rosalind Franklin? 12) What was her contribution to the discovery of DNA? 13) Why is the work of Rosalind Franklin overlooked in the discovery of DNA? 14) List the pieces of information about DNA structure that Rosalind Franklin discovered through her x-ray diffraction research. 15) What ...
Chapter 13
Chapter 13

... The duplex may block initiation of translation, cause termination of transcription, or create a target for an endonuclease. ...
L 04 _transcription
L 04 _transcription

... ribosomal RNA. Protein synthesis occurs on ribosomes, which are complexes of polypeptides and special rRNAs. rRNA constitutes ~80% of the RNA in a cell. rRNAs demonstrate several exceptions to themes in molecular genetics: Not all enzymes are proteins: rRNA performs the catalytic functions of the ri ...
Bio1A Unit 2 Study Guide Cell Cycle
Bio1A Unit 2 Study Guide Cell Cycle

... a. Know what a gene is and the final product – enhancer elements, operators, operons, promoters,  transcribed regions, untranscribed region, exons, introns, etc  2. Requirements of Transcription & RNA polymerase (be able to compare to Replication & DNA pol)  a. Promoter, no primer (and therefore no  ...
Predicting protein degradation rates
Predicting protein degradation rates

... Transcription ...
Chapter 11 and 12 Genetics is the scientific study of heredity
Chapter 11 and 12 Genetics is the scientific study of heredity

... 1. The enzyme RNA polymerase binds to DNA and separates the strands. 2. RNA polymerase builds a strand of RNA using on strand of DNA as a template. 3. The DNA is transcribed into RNA using base pair rules, except that uracil binds to adenine. The directions for making proteins are in the order of th ...
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... • Person #2 : Fill in the correct mRNA bases using the base pair rules • Pass the board to Person #3 – tRNA • Person #3: Fill in the correct tRNA bases using the base pair rules • Find the amino acid that goes with the tRNA (use genetic code wheel ...
Principles of Biology Lake Tahoe Community College
Principles of Biology Lake Tahoe Community College

... D. Eukaryotic RNA may be spliced in more than one way E. Translation and later stages of gene expression are also subject to regulation 1. Breakdown of mRNA 2. Initiation of translation 3. protein activation 4. protein breakdown F. Multiple mechanisms regulate gene expression 1. flow of genetic info ...
CHNOPS- Simulating Protein Synthesis
CHNOPS- Simulating Protein Synthesis

... Genes are the units that determine inherited characteristics, such as hair color and blood type. Genes are the lengths of DNA molecules that determine the structure of polypeptides (the building blocks of proteins) that our cells make. The sequence of nucleotides in DNA determines the sequence of am ...
MITOCHONDRIA BIOLOGY - web.biosci.utexas.edu
MITOCHONDRIA BIOLOGY - web.biosci.utexas.edu

... A lot of the DNA must be non-coding; don’t have many more genes than liverwort Mt DNA. There are a lot of Cp-DNA sequences • “promiscuous DNA", integrates by illegitimate recombination There are also nuclear DNA sequences • e.g., Oenothera: nuclear 18S rrn gene in Mt DNA ...
RNA interference 1.  The central dogma 3.  The RNAi mechanism
RNA interference 1. The central dogma 3. The RNAi mechanism

... mRNA is cleaved and destroyed. No protein can be synthesized. ...
PreAP Biology Study Guide Unit 4: Molecular Genetics 4.1 What are
PreAP Biology Study Guide Unit 4: Molecular Genetics 4.1 What are

Introduction to the biology and technology of DNA microarrays
Introduction to the biology and technology of DNA microarrays

... • Nucleus: membrane enclosed structure which contains chromosomes, i.e., DNA molecules carrying genes essential to cellular function. • Cytoplasm: the material between the nuclear and cell membranes; includes fluid (cytosol), organelles, and various membranes. • Ribosome: small particles composed of ...
1pt - adamsapbio
1pt - adamsapbio

... proteins that are always needed are called: ...
< 1 ... 469 470 471 472 473 474 475 476 477 ... 498 >

Primary transcript



A primary transcript is the single-stranded ribonucleic acid (RNA) product synthesized by transcription of DNA, and processed to yield various mature RNA products such as mRNAs, tRNAs, and rRNAs. The primary transcripts designated to be mRNAs are modified in preparation for translation. For example, a precursor messenger RNA (pre-mRNA) is a type of primary transcript that becomes a messenger RNA (mRNA) after processing.There are several steps contributing to the production of primary transcripts. All these steps involve a series of interactions to initiate and complete the transcription of DNA in the nucleus of eukaryotes. Certain factors play key roles in the activation and inhibition of transcription, where they regulate primary transcript production. Transcription produces primary transcripts that are further modified by several processes. These processes include the 5' cap, 3'-polyadenylation, and alternative splicing. In particular, alternative splicing directly contributes to the diversity of mRNA found in cells. The modifications of primary transcripts have been further studied in research seeking greater knowledge of the role and significance of these transcripts. Experimental studies based on molecular changes to primary transcripts the processes before and after transcription have led to greater understanding of diseases involving primary transcripts.
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