Basic chemistry of a cell Properties of water – – – Life on Earth began in water and evolved there for 3 billion years before spreading onto land. Modern life‚ even terrestrial life‚ remains tied to water. All living organisms require water more than any other substance. Human beings for example‚ can survive for quite for a few weeks without food‚ but only a week or so without water. – – – Water is deceptively simple. It is shaped something like a wide V‚ with its two hydrogen atoms joined
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nsPharmacology Multiple Choice Question Bank Primary Exam for FANZCA - July 2001 Update [1] Queensland Anaesthesia Website: • • [ MCQPharmJul2001v3.doc] (v3.02) http://www.qldanaesthesia.com All these questions are also available on the website and may be printed from the separate web pages (File->Print on your browser) or downloaded as a complete file (THIS document). Please re-format the file as required before you print. The MCQs are in 10 point size for easier reading. Change this to
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Unit Test #2 Review Redox Reactions oxidation: involves loss of electrons‚ often occur with loss of hydrogen‚ occur with gain of oxygen reduction: involves gain of electrons‚ often occur with loss of oxygen‚ occur with gain of hydrogen redox reactions: coupled reactions that play a key role in flow of energy‚ involve gain/loss of electrons Energy Terms anabolic: using energy to build large molecules catabolic: breaking down compounds into smaller molecules to release energy metabolism: all the
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Herpes Simplex Virus Type 1 Infection at the Molecular Level Research Paper Virology 24 November 2008 Abstract Herpes simplex virus type 1 (HSV-1) infection is widespread and causes significant disease in humans. The structure‚ epidemiology‚ pathogensis and immune response are examined in this review‚ as well as specific ways to reduce and eliminate pathology and related diseases. The virus naturally infects mucosal areas and begins the search for its target host cell. Upon binding to the host
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Chapter 1: Biology- The study of life A Hierarchy of Organization 1. Molecules 2. Organelle 3. Cell 4. Tissue 5. Organ 6. Organism Emergent Properties- Novel properties that emerge as each step up the hierarchy of biological order is taken. Reductionism- Reducing complex systems to simpler components that are more manageable to study. Cells- The lowest level of structure capable of performing all the activities of life‚ all organisms are composed of cells which are the basic units of structure
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|Atoms and Molecules | |Everyday Science | | An atom is the smallest "piece" of an element that still has the properties of that element. A molecule is a combination of two or more | |atoms bonded together.
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Agarose Gel Electophoresis of DNA Topoisomers Introduction DNA can exist as different isomers that change the confirmation of the DNA’s structure. DNA can be in a linear confirmation this is a relaxed confirmation as the DNA can rotate about its axis unconstrained. It can also exist as a nicked circle this is also a relaxed confirmation as the DNA strands can again rotate freely with respect to one another. Covalently closed circular DNA or cccDNA exists as a supercoil this is because the covalent
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Abstract: Aim: This in-vivo study was conducted to compare the effect of MTAD and 3% Sodium Hypochlorite on postoperative discomfort in patients indicated for pulp space therapy. Materials and Methods: A total of 60 patients from Department of Conservative dentistry & Endodontics‚ Peoples Dental College‚ Bhopal‚ indicated for pulp space therapy were part of this study. Patients were randomly divided into 2 groups. Group 1- 30 patients were treated with MTAD. Group 2- 30 Patients were treated with
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SOUTH AUSTRALIAN MATRICULATION 2CME20 – CHEMISTRY ISSUE INVESTIGATION Should Bioplastic be Used to Replace Petroleum Based Plastic in packaging? Name : Chang Wei Yang Group : G2 Introduction Plastics‚ which are utilized heavily in packaging from areas such as product wrappers to food wrapping illustrate that versatile plastic is an essential part of our lives. However‚ with the threat of global warming on the horizon‚ as well as the depletion of fossil fuels used in the production
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The Great Metabolic Race Organisms are constantly undergoing various chemical reactions and pathways that enable for them to maintain life. These pathways are part of metabolism‚ involving catabolism (break down of organic nutrients for extraction of useful) and anabolism (energy dependent conversion of small precursor molecules in complex molecules); some of which are energy coupled to provide energy efficiency. This intermediate coupling is due to the “energy currency” within the body‚ known as
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