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DNA - kehsscience.org
DNA - kehsscience.org

... replicase ...
DNA - kehsscience.org
DNA - kehsscience.org

Biology Study Guide 10 p
Biology Study Guide 10 p

... RACE TO FIND THE STRUCTURE OF DNA: Read 10.1-10.3 Match the DNA Scientists pp. 182-187 A. Watson and Crick C. Rosalind Franklin B. Hershey and Chase D. James Chargaff _____used radioactive DNA and protein to find DNA =genetic material in T2 bacteriophages _____found A = T and C = G amounts in a DNA ...
Tech Notes Use of Plasmid-Safe™ to Prevent Cloning Artifacts Due
Tech Notes Use of Plasmid-Safe™ to Prevent Cloning Artifacts Due

... DNA Ligase (Epicentre) and transformed into Nova Blue™ competent cells (Novagen). The transformants were plated on IPTG/X-gal-containing media. Blue colonies indicate reclosure of the plasmid; white colonies indicate that bacterial DNA was inserted into the plasmid. As seen on plate A at upper right ...
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DNA Review Questions

... 6. Why does replication on the lagging strand occur away from the replication fork instead of toward it as in the leading strand? ...
Human DNA Dance - University of Wisconsin Biotechnology Center
Human DNA Dance - University of Wisconsin Biotechnology Center

... You can show how DNA can melt into two single strands by asking the two lines to release their handshakes and take one step to the left, while keeping their right hands in the C, T, G or A form. You can show how two complementary single strands of DNA can anneal (come together) by then having the tw ...
DNA.ELECTROPHORESISREVIEW
DNA.ELECTROPHORESISREVIEW

... What side of the gel box is DNA placed on? Why? Explain why DNA is called a double helix. What makes up the backbone of DNA? The rungs? Draw and label the parts of a G nucleotide. Explain what complementarity is. Give an example for DNA and RNA. Identify the central dogma of Biology. Transcribe and ...
Chapter 12 - useful links
Chapter 12 - useful links

... strands are wrapped around each other. Their model looked like a twisted ladder. They quickly determine the method by which DNA copies itself. april 1953 The Structure of DNA DNA is a double helix macromolecule, that is a polymer composed of many stacks of nucleotides. A nucleotide is made of a nitr ...
DNA Structure and Function
DNA Structure and Function

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Finding the Structure: pieces of the puzzle

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Southern hybridization

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BERRY FULL OF DNA

... Blood is the easiest tissue to obtain from living humans. White blood cells contain a nucleus, while red blood cells do not. Skin cells would also work if only a small amount of DNA were needed. 7. List two reasons why a scientist might want to study the DNA of strawberries. Scientists might want to ...
Chapter 12 Practice Test
Chapter 12 Practice Test

... 18. Chromatin contains proteins called ______________________. 19. DNA replication is carried out by a series of _____________________. 20. The tips of chromosomes are known as _________________________. ...
Biotechnology IB Syllabus
Biotechnology IB Syllabus

... Essential idea: Genetic information in DNA can be accurately copied and can be translated to make the proteins needed by the cell. 2.7 DNA replication, transcription and translation Nature of science: Obtaining evidence for scientific theories—Meselson and Stahl obtained evidence for the semi-conse ...
The Structure of DNA
The Structure of DNA

... combinations of nitrogenous bases that form the “rungs” of DNA. • However, this does not restrict the sequence of nucleotides along each DNA strand. • The linear sequence of the four bases can be varied in countless ways. • Each gene has a unique order of nitrogen bases. • In April 1953, Watson and ...
DNA protein synthesis
DNA protein synthesis

... List the three restriction enzyme we simulated in the DNA Fingerprinting ...
DNA Mutations - pams
DNA Mutations - pams

...  Proofreading- cells have built in mechanisms that ...
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Date________ Block________ Constructing a DNA Helix Questions

... growth; they defend you from infection. In short, proteins determine your body’s form and carry out its functions. DNA determines what all of these proteins will be. The DNA molecule is a double helix. Think of it as a ladder that has been twisted into a spiral. The outside of the ladder is made up ...
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touchlight

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Slides PPT

... • When purine bases are cleaved at the glycosidic bond (as in the example in the introduction) the AP endonuclease again comes into action to remove the deoxyribose. The DNA pol I and ligase then mop up. ...
DNA Structure, Replication and Genetic Code 25 points
DNA Structure, Replication and Genetic Code 25 points

... 9. Name the two parts of a nucleotide that are always the same. 1.The phosphate group and 2. deoxyribose. 10. What is the difference between a nucleotide base and a base, when you discuss DNA. ...
(A) Cytosine (C)
(A) Cytosine (C)

... DNA : Introduction • The amino acid sequence of a polypeptide is programmed by a gene. • A gene is a small region in the DNA. • Nucleic acids store and transmit hereditary information ‫المعلومات الوراثية‬. • There are two types of nucleic acids: ribonucleic acid (RNA) and deoxyribonucleic acid (DNA ...
SBI4U-Molecular Genetics Molecular Genetics Unit Test –Multiple
SBI4U-Molecular Genetics Molecular Genetics Unit Test –Multiple

... e) Single-stranded DNA c) Messenger RNA Because the complementary base pairs do not match closely, we can assume it is singlestranded b/c no uracil is present. There’s no reason to think it is mitochondrial DNA (also it is a virus so no mitochondria would be present. This example mirrors the bacteri ...
DNA Structure
DNA Structure

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DNA repair



DNA repair is a collection of processes by which a cell identifies and corrects damage to the DNA molecules that encode its genome. In human cells, both normal metabolic activities and environmental factors such as UV light and radiation can cause DNA damage, resulting in as many as 1 million individual molecular lesions per cell per day. Many of these lesions cause structural damage to the DNA molecule and can alter or eliminate the cell's ability to transcribe the gene that the affected DNA encodes. Other lesions induce potentially harmful mutations in the cell's genome, which affect the survival of its daughter cells after it undergoes mitosis. As a consequence, the DNA repair process is constantly active as it responds to damage in the DNA structure. When normal repair processes fail, and when cellular apoptosis does not occur, irreparable DNA damage may occur, including double-strand breaks and DNA crosslinkages (interstrand crosslinks or ICLs).The rate of DNA repair is dependent on many factors, including the cell type, the age of the cell, and the extracellular environment. A cell that has accumulated a large amount of DNA damage, or one that no longer effectively repairs damage incurred to its DNA, can enter one of three possible states: an irreversible state of dormancy, known as senescence cell suicide, also known as apoptosis or programmed cell death unregulated cell division, which can lead to the formation of a tumor that is cancerousThe DNA repair ability of a cell is vital to the integrity of its genome and thus to the normal functionality of that organism. Many genes that were initially shown to influence life span have turned out to be involved in DNA damage repair and protection.
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