[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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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 acid inactivates the enzyme and then
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References: Bibliography (accessed 22.11.14) http://digestion.ygoy.com/2010/07/15/the-5-stages-of-digestion/ http://www.ivyroses.com/HumanBody/Digestion/DigestiveSystem-BasicStages.php http://www.bbc.co.uk/schools/gcsebitesize/science/add_edexcel/common_systems/digestionrev6.shtml http://my.clevelandclinic.org/health/ns_overview/hic-the-structure-and-function-of-the-digestive-system
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mechanically broken down. An enzyme named salivary amylase breaks starch into chunks of glucose called dextrins and maltose(disaccharide maltose). Once the food reaches the stomach‚ the acid in the stomach inactivates all salivary amylase. Carbohydrate digestion is not conducted the stomach for this reason. Before the food approaches the small intestine‚ the pancreas secretes pancreatic amylase. The pancreatic amylase digests starch into maltose. The enzymes maltase‚ sucrose‚ and lactase mucosal
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Quiz 1 Study Guide: Fall 2013 1. Know how to read a food label. There will be questions asking you to apply that knowledge‚ not just show that you memorized it. 2. How many calories per gram of CHO‚ fat‚ and protein? CHO: 1gram=4 calories Fat: 1gram =9 calories Protein: 1 gram=4 calories 3. What are the stages of change from the Transtheoretical Model of Change? Know the order they come in and the characteristics of each stage. Precontemplation (Not Ready)-"People are not intending
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Reaction Paper in Food and Nutrition John Benedict C. Calma Ms. Marisse Sia BSHM-141 1. What are the dishes served at World Buffet? Group these dishes according to its main nutrients. Different foods are served at World Buffet just like a Japanese cuisines like sushi‚ maki and tempura. There are also western foods that are served at World Buffet just like US Roast Beef‚ Spanish Paella and Mexican Burritos. All of them are examples of foods that are served in a World Buffet. Desserts are
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point) positive 3. unknown 1 (1 point) negative 4. unknown 2 (1 point) negative 5. unknown 3 (1 point) positive 6. unknown 4 (1 point) positive 1. List whether each of the following substances was positive or negative for starch‚ as indicated by using iodine. (7 points) 1. onion juice (1 point) positive 2. water (1 point) negative 3. cornstarch (1 point)positive 4. unknown 1 (1 point) negative 5. unknown 2 (1 point) positive 6. unknown
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bacterial spores. May have to overcome prey defences (e.g. spines‚ prickles‚ noxious chemicals) and therefore might need weapons of attack or immunity to these chemical defences. The food has to be made usable by the consumer by a process of digestion. Material that is indigestible will have to be voided. Foods are usually dead or alive body parts and generally consist of large‚ complex organic molecules that need breaking down to smaller chemically simpler forms. small‚ simple organic and
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Experiments investigating the effect of a particular factor on an enzyme-catalysed reaction are commonly used as assessed practicals in Biology. The reason for this is there are a number of factors that can be investigated‚ and therefore‚ a number of factors that can also be controlled. From our lecture‚ we are aware that the following can affect the rate of reaction: 1) Temperature: a. Independent variable: A range of temperatures should be investigated‚ with particular attention
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prevent food from clogging these airways. 16. During digestion‚ enzymes such as amylase break chemical bonds between the sugar monomers in starches. Digestive enzymes also break down foods and make the nutrients available to the body. 17. Mechanical digestion includes the muscles of the stomach contracting to mix stomach fluids and food which produces a mixture known as chyme. Chemical digestion includes the production of acids that aid the digestion and absorption of food. 18. In the stomach‚ hydrochloric
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