headline. ENVIRONMENT‚ NOT GENES‚ KEY TO OUR ACTS. The source of the story was Craig Venter‚ the self-made man of genes who had built a private company to read the full sequence of the human genome in competition with an international consortium funded by taxes and charities. That sequence--a string of 3 billion letters‚ composed in a four-letter alphabet‚ containing the complete recipe for building and running a human body--was to be published the very next day (the competition ended in an arranged
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Methods/Materials I did three experiments. I mixed lemon juice and baking soda‚ammonia and vinegar‚ and finally‚ hydrochloric acid and sodium hydroxide. I did each experiment when the acid was 0‚ 20‚ 40‚ 60‚ and 80;all in degrees Celsius. Therefore‚ I could compare the exothermic reaction with the endothermic reaction at each temperature. For the Lemon Juice + Baking Soda experiment‚ I had a different set-up. On a beaker‚ which had baking soda in it‚ I put a stopper. The stopper had two holes that
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Anatomy Review 1. The somatic nervous system stimulates ____________ muscle. The autonomic nervous system stimulates ___________ muscle‚ ____________ muscle‚ and ___________. 2. The autonomic nervous system (ANS) consists of two divisions‚ each innervating the effector organs. The sympathetic nervous system (SNS) generally speeds up everything except digestion. The parasympathetic nervous system (PNS) generally slows down everything but digestion. Signals from the
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BPA‚ is a carbon based synthetic compound belonging to the group of diphenylmethane derivatives and bisphenols. The chemical formula for BPA is (CH3)2C(C6H4OH)2. BPA was first synthesized in 1891‚ and was recognized as a synthetic estrogen in the 1930s. The Food and Drug Administration (FDA) approved the use of BPA in 1960 to manufacture certain plastics and epoxy resins. This chemical compound of synthetic estrogen is used to harden plastics and resins‚ while keeping them lightweight. BPA is found
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Did you know? 1. The map of Apayao is shaped like a man’s head. (forestry.denr.gov.ph – pic) 2. Sagada is known for its famous “hanging coffins”. Coffins are smaller than the usual because people are buried in a fetal position‚ which represents a return to nature. Not anyone can be buried in the traditional way; you have to be married first and have grandchildren. 3. The inhabitants in the Cordilleras are called Igorots which means “people of the mountains“. They are the
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Observations of Chemical and Physical Changes Hands-On Labs‚ Inc. Version 42-0182-00-03 Abstract: Observations: Exercise 1: Observations of a Chemical Change Data Table 1. Chemical Reactions. Well Chemical #1 (4 drops) Chemical #2 (4 drops) Observations: Chemical Change (Y/N) A1 NaHCO3 Sodium Bicarbonate HCl Hydrochloric Acid A2 NaOCl Sodium Hypochlorite KI Potassium Iodide Observation 1: + Add 2 drops of starch Observation 2: A3 KI Potassium Iodide Pb(NO3)2 Lead Nitrate
Free Chemical reaction Hydrochloric acid Sodium bicarbonate
seventh but more impressive is their growth which is twice the overall export growth of Pakistan. Basic Chemical manufacturer may be defined as production of drugs and chemical by synthesis‚ fermentation or extraction from naturally occurring materials of biological or mineral origin. Unfortunately‚ while the pharmaceutical formulation industry has grown at a relatively rapidly pace‚ the basic chemical industry in Pakistan has lagged behind. Basic manufacturer is dependent upon a reasonably well-developed
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Chemical equilibrium is the point at which the concentrations of reactants and products do not change with time. It would appear as if the reaction has stopped‚ but in fact‚ the rates of the forward and reverse reactions are equal‚ causing the reactants and products to be created at the same rate. This can be expressed mathematically in the form of the equilibrium constant. The following is the general equation for a reversible chemical reaction: aA+bB →cC+dD
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Chemistry: A Molecular Approach (Tro) Chapter 10 Chemical Bonding II: Molecular Shapes‚ Valance Bond Theory‚ and Molecular Orbital Theory 1) Determine the electron geometry (eg) and molecular geometry(mg) of BCl3. A) eg=trigonal planar‚ mg=trigonal planar B) eg=tetrahedral‚ mg=trigonal planar C) eg=tetrahedral‚ mg=trigonal pyramidal D) eg=trigonal planar‚ mg=bent E) eg=trigonal bipyramidal‚ mg= trigonal bipyramidal Answer: A 2) Determine
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chemically convert the substance into nutrients. It usually involves mechanical manipulation and chemical action. Mechanical Digestion What is it? This type of digestion involves the mixing‚ grinding or crushing of large pieces of food into smaller places. Why does it take place? So that the food we consume is broken down into smaller pieces before we swallow it which in turn makes process of chemical digestion that takes place later on more effective because it works more efficiently on
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