Section 1 : Identifying the Genetic Material Griffith’s Experiments In 1928‚ Frederick Griffith‚ a bacteriologist‚ was trying to prepare a vaccine against pneumonia. A vaccine is a substance that is prepared from killed or weakened disease-causing agents‚ including certain bacteria. The vaccine is introduced into the body to protect the body against future infections by the disease-causing agent. Griffith discovered that harmless bacteria could turn virulent when mixed with bacteria that cause
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biology FOLIO BIOLOGY POLLUTION NIK ‘AINAA SYAKIRAH BT NIK GHAZALI 5 IBNU SINA INTRODUCTION Pollution is the introduction of contaminants into a natural environment that causes instability‚ disorder‚ harm or discomfort to theecosystem i.e. physical systems or living organisms. It can also be define as any undesirable changes in physical‚ chemical or biological characteristics of the natural environment‚ brought about when harmful substances or energy released by human activities. Pollution
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When I hear Dr. Martin Luther King Jr.’s quote‚ I think about my experience is my AP Calculus course. Up until my senior year of high school‚ I naturally succeeded in my math courses. In my first trimester of AP Calculus‚ I struggled with understanding the course material. But more importantly‚ my grade suffered. My first instinct was to drop the course and enroll in an easier class. I told my mom I had scheduled an appointment with the guidance counselor and I planned to enroll in the course
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Cycles in Biology Cycles in biology play a fundamental role in the world that we live in. Cycles occur all around and inside of us in many different forms‚ from the Krebs to the Calvin cycle. There are large scale cycles happening and they are essential in regulating the nutrients and substances that are around us which without‚ life on earth could no function. One of the largest cycles that occurs all around us is in everyday life is the carbon cycle. The current atmospheric
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TJ Long AP Euro DBQ Essay There were numerous responses to the plague‚ such as fear‚ greed‚ and looking for a cause. The plague is a zoonotic disease‚ one of the three rare types of diseases that is created from Yersinia Pestis‚ a part of Enterobacteriaceae. This was a devastating time for people in Europe from the late 1400s to the early 1700s and there were many responses about how the plague was affecting society during this time. This disease killed about 25 million people which caused
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numerous choices await them. Is it going to be the regular track for them? What about honors‚ or pre-AP? Or will they decide to go all the way‚ for full on Advanced Placement? These decisions are important ones and have the potential to either open or shut doors for my future. However‚ after plenty of internal pros-and-cons lists and a fair amount of coin flips‚ I reached a decision. Despite the ever-looming AP exam and daunting workload‚ I have committed to this class because I am determined to challenge
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Biology Project Autumn Brown 3rd block Mrs. Stephens More than 2‚000 years ago‚ Aristotle began grouping plants and animals into various categories. Although he did not consider the idea that different organisms were related by descent‚ he devised a system that placed these organisms in a hierarchy. Through classification systems‚ scientist have found it easier to find answers to important questions. This way
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Paper 1 Chapter 1: Cell structure May/June 03 1 An actively growing cell is supplied with radioactive amino acids. Which cell component would first show an increase in radioactivity? A Golgi body B mitochondrion C nucleus D rough endoplasmic reticulum 2 Which pair of organelles has internal membranes? A chloroplasts and mitochondria B chloroplasts and nuclei C mitochondria and ribosomes D nuclei and ribosomes 3 Which combination is found in a prokaryotic cell? Endoplasmic reticulum DNA RNA Nucleus
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triphosphate (ATP) is a multifunctional nucleotide used in cells as a coenzyme. It is often called the "molecular unit of currency" of energy transfer. ATP transports chemical energy within cells for metabolism. It is produced by photo-phosphorylation and cellular respiration and used by enzymes and structural proteins in many cellular processes‚ including active transport‚ respiration‚ and cell division. One molecule of ATP contains three phosphate groups‚ and it is produced by ATP synthase from
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PATTERNS IN NATURE – Summary Notes 1. ORGANISMS ARE MADE OF CELLS THAT HAVE SIMILAR STRUCTURAL CHARACTERISTICS 1.1 Outline the historical development of the cell theory‚ in particular‚ the contributions of Robert Hooke and Robert Brown The Cell Theory states that: All living things are made of cells (Theodor Schwann & Matthias Schleiden) Cells are the basic structural and functional unit of organisms (Theodor Schwann) All cells come from pre-existing cells (Rudolf Virchow) The historical
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