a Gray Whale beached with over 20 plastic bags in its stomach (Todd David‚ 2011). Reaching Humans Obesity‚ infertility‚ and depression have all been linked to plastic pollution. Endocrine disrupters such as Bisphenol A are key monomers in plastic production (Stanton‚ 2009). These have been linked to affects on fat cells‚ which can lead to obesity. They have also found estrogen-mimicking effects that can affect a newborn babies brain and sexual organ development. Phthalates have
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acid (COOH) group on each end are reacted with molecules containing amine (NH2) groups on each end. The resulting nylon is named on the basis of the number of carbon atoms separating the two acid groups and the two amines. These are formed into monomers of intermediate molecular weight‚ which are then reacted to form long polymer chains. Nylon was intended to be a synthetic replacement for silk and substituted for it in many different products after silk became scarce during World War II. It
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The type of the enzyme tasted in this experiment was amylase. Amylase enzymes break down starch into small carbohydrate molecules called monomers‚ or saccharides if it is sugar. Starch is broken down by amylase into maltose or glucose and fructose‚ which are simple sugars (Guzmán‐Maldonado‚ 1995). There are two types of amylase that are being tested in this experiment‚ which are Aspergillus
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- Environmental risk may affect the pregnancy if below guideline limit is exceeded : @ bone cement : the data in earlier literature showed in toxic doses to pregnant animal it can Can recurrent abortion‚ skeletal anomalies but in human was unclear . acute toxic dose in animals can casue lung damage and edema estimated at 3‚750 ppm = 15‚375 mg/m3 . In short term exposure of toxic
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cross-linking. CHEMICAL STRUCTURE Common thermoplastics range from 20‚000 to 500‚000 amu‚ while thermosets are assumed to have infinite molecular weight. These chains are made up of many repeating molecular units‚ known as repeat units‚ derived from monomers; each polymer chain will have several thousand repeating units. The vast majority of plastics are composed of polymers of
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DNA Research Paper DNA Structure: DNA (deoxyribonucleic acid) is the code for life; it makes up the genetic material of living organisms. DNA is a long molecule made up of many subunits‚ or monomers‚ called nucleotides. Nucleotides are made up of three parts: a sugar‚ a phosphate group‚ and a nitrogenous base. Nucleotides contain a sugar-phosphate backbone and bases. There are four bases in DNA: adenine‚ cytosine‚ guanine‚ and thymine. A (adenine) always pairs with T (thymine)‚ and C (cytosine)
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BSC 1020 – Homework Unit B The Molecules of Life This homework is worth 25 points of the 900 points available in the course. Please use the book‚ PPT lecture handouts‚ and internet to answer the following six questions: Question 1 (8 points) Mr. Tony‚ a biology teacher‚ gives his student Ziad four samples and tells him they are lysine (an amino acid)‚ lactose (a disaccharide)‚ insulin (a protein hormone)‚ and RNA. The samples are in test tubes marked 1‚ 2‚ 3‚ and 4‚ but Ziad is
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Rebekah May Taylor - 20086758 The Role of Nutrition in Health and Diet-related Diseases Contents 1. Metabolic Processes 3 1.1. Anabolism 3 1.2. Catabolism 4 1.3. Digestion and Absorption 6 1.4. Amino Acid Interconversion 1.5. Respiration 8 1.5.1. Glycolysis 8 1.5.2. Link Reaction 9 1.5.3. Krebs Cycle 9 1.5.4. Electron Transport Chain 10 1.5.5. Anaerobic Respiration 10 2
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Solid lipids (not oils) solid at room temperature 4) Glycogen‐ chains of glucose used for energy storage Synthesizing Polymers 1) Dehydration synthesis a. monomers join together into polymers while losing water molecules. This process is carried out by losing (‐OH) from one of the monomers and (H) from another monomer. The two unstable monomers join together‚ and the (‐OH) and (H) combine forming water (H2O) Taking Polymers Apart 1) Hydrolysis a. Adding H2O so that OH and H can be restored Carbohydrates
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Chemistry Exam Study Sheet Organic Chemistry • Study of compounds to which carbon is the principal element. • Carbon is special because it has 4 bonds. Functional Groups • Organic substances are organized into organic families. • Organic Families – group of organic compounds with common structural features. o Each family has a recognizable physical property and a specific structural arrangement. o Each combination is referred to as a functional group. o Even
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