Undergraduate Questions (50 Pts) 1. (4 pts) A chemist working in a pharmaceutical lab synthesized a new drug as a racemic mixture. Why is it important that she separates the two enantiomers and test each for its biological activity? 2. (6 pts) Phosphoric acid (H3PO4) has three dissociable protons‚ with the pKa’s shown below. Which form of phosphoric acid predominates in a solution at pH 4? Explain your answer. Acid pKa H3PO4 2.14
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FUCTIONING AND FOOD SOURCES MACRONUTIRENTS Protein: Growth and repair. Good source of energy meat and eggs Carbohydrates: Main source of energy for body. Fuel for energy bread‚ pasta Fats and Lipids: Assists in absorption and transport of fat soluble vitamins‚ provides insulation for the body cake‚ sugar Monounsaturated and Polysaturated are good fats avocado Saturated and Trans fats are bad fats oil deep fried food Fibre: Regulate the functioning of the digestive system- healthy
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Saturated fat is frequently consumed in the Modern western diet and is highly abundant in places such as meat and dairy products. Research (5) analyze the existing controversy on whether consuming saturated fat is beneficial or not. Present (2) studies contribute to the discrepancy because they don’t consider the variation saturated fatty acids (SFA) have on individual people. Factors that contribute to the differences are genes‚ diet nutrients‚ obesity level‚ exercise‚ and lifestyle. Insufficient
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features of carbohydrates account for the fact that a wide variety of polysaccharides exist is pentoses and hexoses. The examples of pentose are ribose‚ deoxyribose‚ ribulose and xylulose. The examples of hexose are glucose which is found in fruits‚ fructose which is found in milk and galactose which is found in honey. Both pentoses and hexoses are mostly found in monosaccharides. They are the most simplest sugar which cannot be futher hydrolysed into smaller units. They contain either an
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are all kinds of fad diets out there that are consistently making outrageous promises to consumers. The latest in the fad diet trend is the “Low Carbohydrate/High Protein” diet. To break it down simply proteins are needed to help the body to grow and repair while carbohydrates provide energy. Both are needed in order for a person to remain healthy‚ which is why fad diets that promote one over the other are harmful to our bodies. Fad diets such as the “low carb/high protein” diet tend to have one thing
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A nutrient is a chemical substance that contain in the food we eat daily. Nutrient also produce energy and metabolic in our body to maintain constant internal. Essential nutrients are classes of nutrient come from food. These are 6 essential nutrients in our food is protein‚ carbohydrates‚ fat‚ vitamins‚ mineral and water. Protein is the food broken down to amino acid by digestive system. Amino system will help building and repairing muscle‚ red blood cell‚ and tissues. They are two main sources
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Nutrition Mon/Wed 9:30-12:20 2/16/10 Fad Diet Critique MEDIFAST Medifast is an extremely popular diet because of the fast results most people see while following this diet. It was developed by physicians and has been recommended by more than 20‚000 doctors since 1980. Medifast claims to be a low calorie‚ low fat diet that many people have joined. The plan is based around high protein shakes‚ bars and soups. The most popular choice is the 5 and 1‚ which consists of 5 Medifast meals
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make up one of the most useful substances for many living organisms: Carbohydrates. Carbohydrates are used for numerous processes in organisms from acting in important roles of cellular recognition in the human body to storing chemical energy in plants in the form or starch. The roles of carbohydrates in the human body alone are numerous; providing energy for working muscles‚ providing energy for the regulation of blood glucose‚ preventing proteins being used for energy‚ breaking down fatty acids
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Effect of Protein Intake on Strength‚ Body Composition and Endocrine Changes in Strength/Power Athletes Introduction: Proteins are often called the building blocks of the body. Protein consists of combinations of structures called amino acids that combine in various ways to make muscles‚ bone‚ tendons‚ skin‚ hair‚ and other tissues. They serve other functions as well including nutrient transportation and enzyme production. Adequate‚ regular protein intake is essential because it isn’t easily
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There are six nutrients and all of these nutrients are very important to everybody’s health and you cannot live without them. The six nutrients are fruits‚ vegetables‚ dairy‚ grains‚ protein‚ and fats/oils. Fats are the ones that you should of course get the least of and fruits and vegetables are the ones you should get the most of. Grains and proteins are of course also necessary to every body’s health and well being. There are of course healthy and unhealthy ways to get these nutrients‚ but I am
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