------------------------------------------------- Griffith’s experiment Griffith’s experiment discovering the "transforming principle" in pneumococcus bacteria. Griffith’s experiment‚ reported in 1928 by Frederick Griffith‚[1] was one of the first experiments suggesting that bacteria are capable of transferring genetic information through a process known as transformation.[2][3] Griffith used two strains of pneumococcus (Streptococcus pneumoniae) bacteria which infect mice – a type III-S (smooth)
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________ Name: Loren B. Matulac Date : November 09‚ 2013 Yr. & Section: IV- Perseverance Teacher: Mrs. Pacita J. Yapsangco “Magnetic Field of a Coil” Experiment 2.5 I. Objectives: To produce a strong magnetic field just by looping the wire into coils II. Materials: 6 V or 9 V batteries 50 cm of bare 12- gauge copper wire Stiff cardboard and scissors Wooden dowel (about 15 cm long x 4 cm
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acid‚ or DNA as it is most commonly known‚ is a strand of molecules found within the cell nucleus of all living things. It is called a “genetic fingerprint” because each is dissimilar to the other and each person‚ apart from identical twins‚ has different DNA patterns. DNA testing has overthrown the way law enforcement agencies collect evidence in numerous criminal cases‚ especially rape and murder and consequently had a large impact on countless past cases. The prospect of a national DNA database
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Use the words to match the function of the following organelles. |M___ Membrane separating the contents of the nucleus from the rest of the cell |a. cilia | |J___ Protein synthesis |b. microtubules | |L___ Helps in animal cell division |c. lysosomes | |E___ Contains DNA
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1. Justify the validity of your model include any limitations of your model. My model is valid because I used reliable sources of information‚ as referenced in my bibliography‚ to find information on what DNA replication looks like. The sources showed me what a strand of DNA looks like as well as giving me an explanation of what occurs during DNA replication. As my model is colour coded it makes it clearer as to what is occurring during each step in DNA replication as well as what each element
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DNA synthesis inhibitors Nucleic acid inhibitors are chemicals which inhibit the production of nucleic acids including both DNA and RNA. DNA and RNA inhibitors inhibit enzyme action in DNA replication in the same way as the topoisomerase inhibitors we discussed earlier. Topoisomerase inhibitors (1) (10) are chemicals which interfere with the enzymes that allow DNA strands to separate and to re-join‚ a process that is required for the division of bacteria and without which DNA cannot effectively
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DNA replication is a biological process that occurs in all living organisms and copies their DNA; it is the basis for biological inheritance. The process starts when one double-stranded DNA molecule produces two identical copies of the molecule. The cell cycle (mitosis) also pertains to the DNA replication/reproduction process. The cell cycle includes interphase‚ prophase‚ metaphase‚ anaphase‚ and telophase. Each strand of the original double-stranded DNA molecule serves as template for the production
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RECOMBINANT DNA TECHNOLOGY * It is a technology that allows DNA to be produced via artificial means. * It is the joining together of DNA molecules from two different species that are inserted into a host organism to produce new genetic combinations that are of value to science‚ medicine‚ agriculture‚ and industry. * Since the focus of all genetics is the gene‚ the fundamental goal of laboratory geneticists is to isolate‚ characterize‚ and manipulate genes. Although it is relatively
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HEMOGLOBIN & MYOGLOBIN Protein Function HEMOGLOBIN: WHEN THE FIRST SUBUNIT OXYGENATES OR DEOXYGENATES THE FOLLOWING THREE SUBUNITS FOLLOW SUIT AND THE SHAPE OF THE HBG MOLECULE IS CHANGED. Oxygenated • R state (relaxed) • When O2 is present‚ it binds to the iron attached to each heme and tugs on it which in turn flattens the heme to a planar shape • The color of oxygenated blood is red (macroscopic) • Carried from the heart throughout the body by the systemic arteries Deoxygenated
Free Hemoglobin Red blood cell Blood
Who Discovered DNA? Heather Kane The discovery of deoxyribonucleic acid‚ more commonly known as DNA‚ has been the foundation for much scientific work. This fundamental discovery was credited to James Watson and Francis Crick. Many people believe that another person‚ Rosalind Franklin‚ also played a large role in the research. How much did she contribute to the discovery? Why is her name left unrecognized? This paper will discuss her part in the search and whether her name should appear next to
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