Neutron Neutral Nucleus Electron Negative Outer-shell Organic Compounds Large Biological Molecule Atoms it Contains Monomer(s) Function(s) in Living Organisms Carbohydrates C‚ H‚ and O Monosaccharides Source of energy Lipid C‚H‚ and O Glycerol and fatty acids Cushion and insulate organs; builds cell membranes Protein C‚ H‚ O‚ N‚ and S Lactase Is an enzyme and hemoglobin is a transport protein Helps chemical reactions‚ provides support and structure‚ provides transport within bodies
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the reaction finish in the microwave oven is collected. Theoretically‚ two layer of liquid phase will present in the product which is the biodiesel and glycerol. The bottom layer which is glycerol is filtered off by a separation process and an impure biodiesel will be obtained. The biodiesel obtained is still contained a little amount of glycerol and other impurities. Hence‚ to get pure biodiesel‚ high-performance liquid chromatography (HLPC) is used to further purify the biodiesel. The biodiesel
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molecules. Different enzymes catalyse different reactions. The table below shows three enzymes and which reaction they catalyse. Enzyme Reaction catalysed Amylase Starch → sugars Protease Proteins → amino acids Lipase Lipids → fatty acids + glycerol Different parts of the gut produce different enzymes. The table below shows where three different enzymes are produced. Enzyme Where produced Amylase Salivary glands‚ pancreas‚ small intestine Protease Stomach‚ pancreas‚ small intestine
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1. Microbiology ⁃ M microscope ⁃ I independent unit ⁃ C comparatively less complex ⁃ R rapid rate of reproduction ⁃ O omnipresent ⁃ humans are living repositories of bacteria/microbes ⁃ borne sterile ⁃ microbe on all surface area of the body ⁃ sterile areas: eyes‚ brain‚ spinal cord‚ bones‚ kidney‚ internal organs ⁃ mutualistic relationship: we provide site and nutrient and microbes provide vitamin‚ aid in food digestion ⁃ division of microbial world ⁃ living component: organism
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Digestive System Digestion is the mechanical and chemical breakdown of food into smaller components that are more easily absorbed into a blood stream‚ for instance. Digestion is a form of catabolism: a breakdown of large food molecules to smaller ones. When food enters the mouth‚ digestion of the food starts by the action of mastication‚ a form of mechanical digestion‚ and the wetting contact of saliva. Saliva‚ a liquid secreted by the salivary glands‚ contains salivary amylase‚ an enzyme
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ABCT 1101/ABCT1D04 Introductory Life Science INTRODUCTORY LIFE SCIENCE At our 3rd lecture‚ we want to discuss • The building blocks of biological organisms – Carbohydrates‚ proteins‚ lipids and nucleic acids • Cell structure and function – Cell membrane‚ ER‚ Golgi‚ cytoskeleton‚ nucleus – Plant cell vs. animal cell Simple Chemistry for Life Science • Each element consists of one kind of atom. – An atom is the smallest unit of matter that still retains the properties of an element
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is associated with nosocomial infection‚ and has the ability to degrade urea to ammonia by production of the enzyme urease. McConkey agar contains lactose‚ which P.vulgaris does not ferment. It ferments glucose‚ sucrose‚ galactose‚ glycerol occasionally maltose with gas production‚ but never lactose. P.vulgaris ferments liquefies gelatin‚ casein‚ and blood serum‚ curdling milk with acid production. P.vulgaris provides a positive result for: sulfur reduction‚urease production
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-When food arrives in the stomach‚ it is reduced to fragments. This step is made possible by the contraction of the muscle of the stomach‚ the muscularis. Composed of three layers of fibers arranged longitudinally‚ circular and oblique‚ it mixes and kneads the food. Then begins the chemical digestion. Only the digestion of proteins begins in the stomach. The mucosa contains glands that secrete gastric juices. Under normal conditions‚ the production of juices is 2 to 3 L per day. Hydrochloric acid
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Background information: 1) What is diffusion? Movement of a particular type of molecule from an area of high concentration to an area of low concentration. 2) How is diffusion used by living cells? Living cells bring in food‚ water and oxygen‚ and excrete wastes through the process of diffusion 3) List two body systems in vertebrates that are dependent on diffusion Digestive system and respirational system 4) What is meant by the term metabolism the chemical processes that occur within a
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enzyme is carbohydrase‚ which is in saliva‚ the pancreas and the small intestine. The product of digestion is glucose. The last enzyme is lipase. It is found in the pancreas and the small intestine‚ it works on fats and produces fatty acids and glycerol. Lipase works best at a pH of
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