six elementary groups: carbohydrates‚ fats‚ proteins‚ vitamins‚ minerals‚ and water. These foods are broken down into various nutrients during digestion. The time taken for the body to extract nutrients and the complexity of the digestion process depend on the molecular nature of the food eaten. Fat molecules seem more complex than the others so its digestion often takes a longer time. Types of Fat Fats molecules are made of carbon‚ hydrogen‚ and oxygen atoms. Based on the arrangements of these atoms
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[pic]Theory notes: Digestion is the process of breaking down organic food into molecules that are small enough to enter cells Chemical digestion : the process of breaking apart complex molecules into simple molecules is called chemical digestion when carried out by enzymes. Mechanical digestion: Is the physical breaking down of larger food into pieces to increase its surface area (the higher the surface area‚ the higher the rate of chemical digestion. Peristalsis: the squeezing of the
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Part 1: Part 2: Parotid salivary gland: It is located by the pharynx and on the cheek. I will remember this because the parotid salivary gland has the key word saliva which is in the mouth. Pharynx: Located in the neck; and‚ I will remember where the pharynx is located because it starts with the letter P which is right across from the parotid salivary gland on the picture. Esophagus: Located in the middle of the body and it is a long tube. I will remember where the esophagus is located because
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agencies in the United States and Canada. A better understanding of the Lamprey‚ its habitats‚ life cycle‚ and control measures shows that the Lamprey needs to be controlled since it may cause damage to an ecosystem. The Sea Lampreys (Petromyzon Marinus) are aquatic vertebrates that resemble eels‚ but unlike eels‚ they feed on large fish. They are also primitive jawless fish; they have a large sucking disk for a mouth and a well-developed sense of smell. Lampreys also do not contain any bones but
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disaster struck when the Reichstag building in Berlin was razed to the ground by a massive fire. The Nazis immediately blamed the blaze on the communists who denied it. The man who was accused of setting the fire was a Dutch born communist called Marinus van der Lubbe. He was beheaded. However 75 years on Van der Lubbe was pardoned and his conviction overturned. Many historians believe that the Nazis were responsible for the setting of the fire in order to discredit the left wing and exploit the
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Chapter 5 Obtaining energy and nutrients for life CHAPTER REVIEW Key words absorption alimentary canal amylase anus autotrophic autotrophs bile bile duct bolus carnivores cellular respiration chloroplasts chyme colon cystic fibrosis digestion digestive system duodenum emulsification enzymes faeces foregut fermenters gall bladder gastric juice herbivores heterotrophic heterotrophs hindgut fermenters ileum jejunum lacteals large intestine liver mucus oesophagus omnivores pancreas pepsin
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The digestion of milk fats by pancreatic lipase and the digestion of proteins by pepsin and trypsin By Jenny Lam Abstract The purpose of this project was to determine how pancreatic lipase and bile salts digest fats to fatty acids and glycerol and how pepsin and tryspin digest to polypeptides. Litmus solution (pH indicator) was used for the fats to indicate the occurrence of the digestion of fats in experiment A. Egg whites was used as the substrate for the enzymes in experiment B.
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FOOD AND NUTRITION & The Digestive System Lecture No. 10 FOOD AND NUTRITION Food Food is any edible material that supports growth‚ repair and maintenance of the body. Foods are substances containing nutrients Nutrients are needed for: • Cell repair • Cell growth • Energy • Protection Food Classification of foods: A. According to the source of origin 1. Animal foods 2. Plant foods B. According to the calorigenicity 1. Calorigenic foods 2. Non-Calorigenic foods C. According to the main
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Assignment: Human Digestion Summary SCI/241 - NUTRITION AURORA MERRY Assignment: Human Digestion Summary Write a 350- to 700-word summary in APA format describing the path food follows through the digestive system. Answer the following questions: How long does it take for food to go through the digestive system? How does digestion occur in each of the following parts of the digestive system? Large intestine Mouth Small intestine Stomach Note. Include descriptions of other organs or components
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places that has to do the way we digest and absorb these three macronutrients. The body is like a work line‚ working in an orderly way to make sure digestion and absorption is done properly. Carbohydrates are a primary energy source for our entire body especially the nerve system which means it needs to be digested and absorbed efficiently. Digestion of carbohydrates starts in the mouth where the process of breaking down starch happens and is broken down to maltose. Once it gets to the stomach the
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