The Effect of substrate on the Rate of Respiration on Yeast1 Justine Maturan Group 4 Sec. Y – 5L November 18‚ 2014 ________________________________________________________________ 1A scientific paper submitted in partial fulfilment of the requirements in General Biology I Laboratory under Prof. Susan Sedano‚ 1st semester 2014-2015 ABSTRACT In order to determine the effect of the substrate on the rate of respiration of yeast‚ Durham test tube method was used in the first experiment
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Mastering Concepts 2.1 1. Which chemical elements do organisms require in large amounts? Carbon‚ oxygen‚ hydrogen‚ nitrogen‚ sulfur‚ and phosphorus are the chemical elements that organisms require in large amounts. 2. Where in an atom are protons‚ neutrons‚ and electrons located? An atom’s protons and neutrons are in its nucleus. A cloud of electrons surrounds the nucleus. 3. What does an element’s atomic number indicate? An atom’s atomic number indicates the number of protons in its nucleus
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Living organisms are composed of part water and part chemicals. The chemicals that help make up life are constructed mainly of carbon. A compound that has carbon in its composition is called an organic compound. Organic compounds also usually contain hydrogen atoms. Even though life is very complex‚ all large molecules that make up life are categorized into four large classes: lipids‚ protein‚ carbohydrates‚ and nucleic acids. These four molecules are known as macromolecules‚ due to their large size
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“building blocks” of polysaccharides are _______‚ and the blocks are covalently linked together by _______. A. | glycerol and fatty acids; glycosidic linkages | B. | amino acids; triple bonds | C. | monosaccharides; glycosidic linkages | D. | disaccharides; triple bonds | E. | oligosaccharides; glycosidic linkages | Answer choice C Which of the following statements about starch is false? A. | Starch may be partially branched. | B. | Starch is a polymer of glucose. | C. | Starch is formed
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Name: Date: 10/14/2013 1. What types of molecules have difficulty crossing the plasma membrane? Explain why. Large polar molecules and
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Amylase is a very important enzyme located in the saliva and pancreatic juices that hydrolyses (break down) starch and glycogen into more simple and readily digestible forms of sugar. Enzymes are biological catalysts that increase the rate of biological reactions. Enzymes are produced in living cells and are involved in speeding up biochemical reactions. They have an active site to which specific substrate binds. They increase the rate of reactions by decreasing the amount of activation energy meaning
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Introduction • Lactose intolerance is actually a very common condition. People will lactose will experience digestive problems when they eat the main sugar found in milk and dairy products. People can acquire lactose intolerance at any point in their life. This can have a negative effect on the quality of life. Causes • Lactose intolerance takes place when your small intestine doesn’t produce enough of an enzyme called lactase to digest milk sugar called lactose (Lactose intolerance Causes‚ 2016)
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output is H2O hydrolysis reactions: ionic or covalent bond‚ splits larger molecules into smaller ones‚ breaks down water carbohydrates are made up of covalent bonds 1:2:1 ratio of C H and O monosaccharide example: ribose disaccharides are joined by condensation disaccharide example: lactose (glucose & galactose) and sucrose (glucose &
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purple-colored compound. Benedict ’s test allows for the detection of the presence of reducing sugars (sugars with a free aldehyde or ketone group). All monosaccharides are reducing sugars since all of them have active carbonyl group. Some disaccharides that are exposed to a carbonyl group are also reducing sugars but less reactive than monosaccharides. By mixing the sugar solution with Benedict’s solution and heating them‚ a redox reaction will occur. The copper (II) sulphate present in Benedict’s
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LAB 10: NAME: DaeNia La Rodé DATE: 25TH January‚ 2011. FORM CLASS: L6 3 SUBJECT: Biology TITLE: Enzymes AIM: To investigate the effect of substrate concentration on the enzyme amylase INTRODUCTION: Enzymes are perhaps one of the most important proteins of the human body. Enzymes such as amylase‚ an enzyme that breaks down carbohydrates‚ work by means of surface catalysis. In other words‚ the surface of the enzyme enables other molecules to react in a manner they would not be able to without
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