Review Questions What is DNA? Where is it found? DNA is the basic building blocks of the genetic makeup‚ and is found in a variety of places in the body such as: blood cells‚ skin cells‚ tissues‚ muscles‚ bone‚ teeth‚ hair‚ and saliva. What is mitochondrial DNA? Mitochondrial DNA is a small portion of the DNA in a eukaryotic cell‚ and can be inherited from one’s mother. What is CODIS? How does it work? CODIS is a computer software that contains DNA profiles of convicted offenders‚ murders
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Title: E. Coli Transformation with a Plasmid DNA Containing the GFP Gene Introduction: Bacterial transformation is the process of bacteria taking in and expressing exogenous DNA. This has led to many other discoveries. In order for bacterial transformation to occur the bacteria must be in a certain physical state to be able to take in DNA. This is called competency and it allows the cell membrane to be permeable so DNA can pass through. Currently researchers are studying the transformation
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BY130 ESSENTIAL/INTRODUCTORY CELL BIOLOGY AND BIOCHEMISTRY 2012-2013 SAMPLE QUESTIONS ON NUCLEIC ACIDS AND MACROMOLECULES 1. Which of the following statements about the structure of DNA shown in the figure on the right is false? The width of the DNA molecule is variable since it can accommodate nucleotides containing varying numbers of nitrogen-based "rings." Hydrogen bonds determine which nitrogenous bases can pair together. A total of 10 pairs of nucleotides are
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Year 10 Science: DNA Presentation Your presentation must include: Criteria - Diagram Explanation A - Clearly explains reasons why diagram was used‚ and clearly explains the structure of DNA An explanation of how you chose what sort of labelled diagram to include: The structure of the double helix allows for the DNA to be tightly packed into chromosomes. It also provides an extremely stable backbone with the negatively charged phosphates pointing to the outside of the molecule. This charge aids
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out of molecules of DNA requires the use of special: A. digestive enzymes B. restriction enzymes C. enzymes from peroxisomes D. microscopic scalpels 2. To seal the cut fragments of DNA together‚ an enzyme called __________ is used. A. amylase B. peptidase C. trypsin D. ligase 3. Choose the correct sequence for gene transfer procedures. A. cleaving DNA‚ recombining DNA‚ cloning‚ screening
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of a specific region of DNA‚ in order to produce enough DNA to be adequately tested. This technique can be used to identify with a very high-probability‚ disease-causing viruses and/or bacteria‚ a deceased person‚ or a criminal suspect. • Gel electrophoresis is a widely used technique for separating electrically charged molecules. It is a central technique in molecular biology and genetic laboratories‚ because it lets researchers separate and purify the nucleic acids DNA and RNA and proteins‚ so
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Purpose In this lab‚ we used PCR and gel electrophoresis to identify genetically modified food. Introduction A genetically modified organism is an organism whose DNA or genetic makeup has been modified to code for certain desirable traits("Genetically Modified Foods"). Common genetically modified plants include corn and soy‚ and common genetically modified animals are fish. Many genetically modified plants are coded to resist bugs‚ grow faster‚ and produce bigger fruit‚ while most GMO animals
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Chapter 1 DNA Is the Hereditary Material Chapter 1 Multiple Choice Format 1. In the experiment showing that DNA is the genetic material of bacteria‚ heat-killed S Pneumococcus cells A. transformed live R Pneumococcus. B. killed mice injected with them. C. were made alive again. D. killed R Pneumococcus. E. transformed type II cells to type III cells. Answer: A 2. The genetic material of a cell or virus A. is always DNA.
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question whether protein or DNA was the genetic material by using Bacteriophages (viruses that infect bacteria). o Bacteriaphages were good for the experiment because they only contain 2 organic compounds‚ DNA and protein. • James Watson and Francis Crick were the first to solve the structure (structure=function) of DNA. • X-ray crystallography( process used to visualize molecules in 3-D. • DNA is a double helix- structure • The nitrogenous bases of DNA are( adenine (A)‚ thymine
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independent restriction enzymes could be virtually impregnable. Among the first restriction enzymes to be purified were EcoRI and EcoRII from Escherichia coli‚ and HindII and HindIII from Haemophilus influenzae. These enzymes were found to cleave DNA at specific sites‚ generating discrete‚ gene-size fragments that could be re-joined in the laboratory. Researchers were quick to recognize that restriction enzymes provided them with a remarkable new tool for investigating gene organization‚ function
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