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Sample Questions for EXAM III
Sample Questions for EXAM III

... 1. eukaryotes do not have introns. 2. only prokaryotes have exons. 3. there's no wasted DNA in a mammalian genome. 4. eukaryotic genes were built up through evolution by "mixing & matching" exons. ...
SBI4U Molecular genetics UNIT_AK
SBI4U Molecular genetics UNIT_AK

... c. RNA primase as a high affinity for the lagging strand, and primes it often d. There is only enough free energy to synthesize one strand continuously ___ 12.Which of the following post-transcriptional modifications is carried out in a prokaryotic cell? a. 5’ cap of 7-methyl guanosine and 3’ poly-A ...
Chapter 8
Chapter 8

... a. DNA replication uses DNA polymerase. RNA manufacturing uses RNA polymerase. b. DNA replication only happens once before the cell divides. A given gene may produce an RNA many times or not at all during a specific cell cycle. c. DNA replication copies the entire length of the chromosome while RNA ...
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Protein Synthesis Simulation Lab

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Describe the operon hypothesis and discuss

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DNA and RNA

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Transcription, Transcription and Mutations

...  Cells can make mistakes in replication and ...
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No Slide Title

... 2) Other enzymes splice together the exons (message segments) giving messenger RNA (mRNA). ...
Worksheet 6 - Iowa State University
Worksheet 6 - Iowa State University

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Information Transfer and Protein Synthesis The DNA

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... Below are two partial sequences of DNA bases (shown for only one strand of DNA) Sequence 1 is from a human and sequence 2 is from a cow. In both humans and cows, this sequence is part of a set of instructions for controlling a bodily function. In this case, the sequence contains the gene to make the ...
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File - Mr. Doyle SUIS Science

... • Another type of anemia, beta thalassemia, is caused by the deletion of the twentieth base pair in the beta globin gene • Deletions cause a frameshift, in which the reading frame of the mRNA codons shifts • Frameshifts garble the genetic message, just as incorrectly grouping a series of letters gar ...
translational - Bioinformatics Institute
translational - Bioinformatics Institute

... Transcription is initiated at a specific base pair and is controlled by the binding of trans-acting proteins (transcription factors) to cis-acting regulatory DNA sequences. However, eukaryotic cis-acting elements are often much further from the promoter they regulate, and transcription from a single ...
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DNA Know your Molecules

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...  mRNA strand passes out of nucleus and attaches to ribosome  tRNA binds to mRNA at the ribosome o anticodon of tRNA that is complementary to codon of mRNA  tRNA delivers amino acids one by one o polypeptide chain grows  Process continues until an mRNA stop codon is read ...
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... Recoding genetic information through RNA editing is a process catalyzed by adenosine deaminases that act on RNA (ADAR). ADARs are an evolutionarily conserved family of enzymes that convert adenosines to inosines within mRNA transcripts. Because inosine is read as guanosine during translation, RNA ed ...
Chapter 17
Chapter 17

... bonded together. 7) The ribosome translocates (moves) the tRNA in the A site (containing the polypeptide chain) to the 8)The ribosome shifts the P site. The P site tRNA mRNA through, one codon moves to the E site and ...
DNA Protein synthesis Review Answer Key.doc
DNA Protein synthesis Review Answer Key.doc

...  The first step in making a protein is to make a copy of the ___________ in the nucleus. DNA or Gene  What nucleic acid contains the master code for making proteins? DNA  What nucleic acids acts as a blueprint in copying the master code? mRNA  Compare and contrast the nitrogen bases on DNA and R ...
DNA WebQuest
DNA WebQuest

... Carefully view and read each part of this animation. Complete the statements and questions below: 1. Protein Synthesis is the making of __________________ from instructions coded for in the DNA. 2. There are many types of proteins and a variety of functions which include: hormones (send signals), tr ...
Protein synthesis File
Protein synthesis File

... Note: once produced, the mRNA molecule is released and leaves the nucleus via the nuclear pores. It travels to the ribosome for translation, i.e. reading5 of the message and production of protein. ...
Control of Gene Expression
Control of Gene Expression

... repressor, and transcription occurs) ...
Identify which nucleic acid (DNA or RNA) contains each of the
Identify which nucleic acid (DNA or RNA) contains each of the

... Problem 2 Condensation of the Components Provide the products for each of the following condensation reactions: a. ...
DNA Template for Protein Transcription Directions: 1) Use the DNA
DNA Template for Protein Transcription Directions: 1) Use the DNA

... Directions: 1) Use the DNA template (above) to find the corresponding piece of mRNA. (Remember you have to identify the starting point in the strand first. The start CODON is?) 2) Once you have identified the starting point, transcribe the mRNA for that gene segment. 3) Use the mRNA sequence to perf ...
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Messenger RNA



Messenger RNA (mRNA) is a large family of RNA molecules that convey genetic information from DNA to the ribosome, where they specify the amino acid sequence of the protein products of gene expression. Following transcription of primary transcript mRNA (known as pre-mRNA) by RNA polymerase, processed, mature mRNA is translated into a polymer of amino acids: a protein, as summarized in the central dogma of molecular biology.As in DNA, mRNA genetic information is in the sequence of nucleotides, which are arranged into codons consisting of three bases each. Each codon encodes for a specific amino acid, except the stop codons, which terminate protein synthesis. This process of translation of codons into amino acids requires two other types of RNA: Transfer RNA (tRNA), that mediates recognition of the codon and provides the corresponding amino acid, and ribosomal RNA (rRNA), that is the central component of the ribosome's protein-manufacturing machinery.The existence of mRNA was first suggested by Jacques Monod and François Jacob, and subsequently discovered by Jacob, Sydney Brenner and Matthew Meselson at the California Institute of Technology in 1961.
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