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Virus - World Health Organization
Virus - World Health Organization

... A virus is an obligate parasite dependent on nutrients inside cells for its metabolic and reproductive needs. It consist of a strand of either DNA or RNA, but not both, separated by a protein covering called a capsid (Symons etal. 2000). Viruses consist of two or three parts : all viruses have genes ...
Sensing the antisense: study of gene expression in differentiating
Sensing the antisense: study of gene expression in differentiating

... More specifically, the level of gene expression that was studied was the regulation after the DNA had been transcribed into RNA, by a reaction between sense and antisense transcripts of the specific gene locus. The sense transcript is the RNA strand transcribed from the DNA sequence of a gene that i ...
DNA RNA protein DNA REPLICATION
DNA RNA protein DNA REPLICATION

... In alternative splicing, individual exons are either spliced or included, giving rise to several different possible mRNA products. Each mRNA product codes for a different protein isoform; these protein isoforms differ in their peptide sequence and therefore their biological activity. It is estimated ...
student worksheet
student worksheet

... Introduction: Origami is an art form based on paper folded into elaborate designs that often look like a real object. To make the designs, detailed instructions must be provided. For example, “fold the paper in half twice”. Is this a good description? Why or why not? In living things, the detailed d ...
Print › Benchmark Second Nine Weeks | Quizlet | Quizlet
Print › Benchmark Second Nine Weeks | Quizlet | Quizlet

... What is genetic material within a cell? ...
Review #2
Review #2

... • Stop codon reached and translation stops • Release factor binds to stop codon; polypeptide is released ...
No Slide Title
No Slide Title

... Tissue-specific Regulation of Transcription Regulated transcription depends on: - specific enhancer for gene(s) - enhancer-specific activator proteins - correct interaction between enhancer and activator Tissue-specific regulation requires that the enhancer-specific activator is present only in cel ...
Chapter 19 - Biology Junction
Chapter 19 - Biology Junction

... 6. In the diagram below – highlight all of the potential locations for gene expression regulation in eukaryotic cells. How does this compare with prokaryotic cells? ...
Notes 4-4
Notes 4-4

... 2. Describe how a cell produces proteins. 3. Identify how mutations can affect an organism. 4-4 The DNA Connection A. The Genetic Code 1. The main function of genes is to control the production of proteins in an organism. Proteins help to determine the size, shape, color, and many other traits. 2. G ...
DNA Function: Information Transmission
DNA Function: Information Transmission

... ● a small fraction of the non-protein coding DNA consists of genes for rRNAs and tRNAs ● until recently, researchers assumed that most of the remaining DNA was untranscribed…”junk” DNA ● however, new research suggests that a significant amount of the genome may be transcribed into non-proteincoding ...
Chap 12 VOCAB - local.brookings.k12.sd.us
Chap 12 VOCAB - local.brookings.k12.sd.us

... DNA is copied into a strand of RNA transcription Three sequential nucleotides in an mRNA molecule that code for a specific amino acid codon ...
Protein Synthesis A gene is a segment of DNA that is located on a
Protein Synthesis A gene is a segment of DNA that is located on a

... Cells have three major types of RNA. Each plays a different role in protein synthesis. 1. messenger RNA (mRNA)- a single stranded molecule that carries the instructions from a gene to make a protein. It carries the genetic message from DNA to the ribosomes. 2. ribosomal RNA (rRNA)- It is part of the ...
cDNA libraries, Microarray Analysis
cDNA libraries, Microarray Analysis

... -First strand synthesis uses RNA as a template to make a complimentary single stranded DNA -Second strand synthesis ...
Data visualization in the post
Data visualization in the post

... • Plays an important role in: – expanding protein diversity – generating proteins with subtle or opposing functional roles – enabling an organism to respond to environmental pressures ...
File - RBV Honors Biology 2016-2017
File - RBV Honors Biology 2016-2017

... Explain what a Punnett Square is. How is it used to predict probability? Be able to complete a Punnett Square. DNA Structure: Draw a nucleotide of DNA and identify the three parts. Identify the 4 nitrogen bases in DNA The strands of DNA molecules are held together by hydrogen bonds. Does a molecule ...
2015/5/13 9:24 AM
2015/5/13 9:24 AM

... 31. A retrovirus differs from a DNA virus because the retrovirus forms DNA from its RNA template. 32. Viruses have a simple cellular structure. 33. In general, viral replication involves production of viral proteins and assembly of viral particles within a host cell. 34. A promoter is a binding sit ...
Chapter 12 Test Review
Chapter 12 Test Review

... _________________ carries coded instructions from DNA to ribosome 29. Write the sequence of mRNA that would result from the transcription of the following section of DNA. ACAATATGCT mRNA- ______________________________ 30. This type of RNA, along with proteins, makes up the structure of a ribosome _ ...
review sheet
review sheet

... 2. Briefly describe the process of replication. Where in the cell does replication occur? When in the cell cycle does replication occur? ...
I. TRANSCRIPTION
I. TRANSCRIPTION

... B. ELONGATION of mRNA transcript • RNA pol - synthesizes mRNA from template DNA – DNA exposed one base at a time (transcription bubble) – Template strand read to make mRNA ...
Notes Protein Synthesis
Notes Protein Synthesis

... RNA SPLICING • In eukaryotes… • Large portions of mRNA do not code for parts of a protein • Introns – noncoding segments • Exons – coding segments • snRNPs (small nuclear ribonucleoproteins) combine with proteins to make spliceosome • Spliceosomes cut at ends of introns and rejoins remaining exons ...
DNA Test Review What are the four nucleotides in DNA? Which
DNA Test Review What are the four nucleotides in DNA? Which

... transcription? What happens first? 9. Where does translation take place? 10. Use your genetic code chart to translate the mRNA into amino acids: AUGUUUCAGUGA 11. What are the steps of replication? 12. Why is tRNA important in translation? 13. What is the difference between DNA and RNA? 14. How many ...
EXPLORE THE ISSUE BEING INVESTIGATED
EXPLORE THE ISSUE BEING INVESTIGATED

... formed, so that all five cell types are formed in the right place, at the right time? The control is carried out by an array of special transcription factors. Transcription factors are regulatory proteins that facilitate the transcription of particular genes. Without the appropriate transcription fa ...
Airgas template
Airgas template

... The __________________ square can be used to describe possible combinations that can occur with transmission of single-gene dominant and recessive traits. ...
D. Cell Specialization: Regulation of Transcription Cell
D. Cell Specialization: Regulation of Transcription Cell

... 2. Elongation ...
Protein Synthesis Review Guide
Protein Synthesis Review Guide

... Anti-codon (3 baes on tRNA) ...
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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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