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digestive system and
| Question | Answer |
|---|---|
| what are the accessory digestive organs | teeth, salivary glands, gallbladder, liver and pancreas |
| alimentary canal or G.I tract | consists of mouth, pharynx, esophagus, stomach, small and large intestine |
| name the two groups the organs of the digestive system are seperated into | alimentary canal also known as gi tract and accessory digestive organs |
| once food has been ingested and digested what comes next | absorption where the bodys cells absorb the broken down good molecules |
| what cells line the digestive tract | epithelial cells |
| what is the process called where ingested food becomes available to body cells | digestion |
| how can ingested good become available to the body cells | it must first be broken down chemically and physically. physically = chewing chemically= enzymatic hydrolysis |
| alimentary canal | the digestive system consists of a hollow tube extending from the mouth to the anus |
| state the overall function of the digestive system | eliminate undigested food provide th body with nutrients and water ingest, digest,and absorb food |
| trypsin is a protease similar to pepsin the protein digesting enzyme in the stomach, would trypsin work well in the stomach | no the stomach is highly acidic while trypsin works well in the neutral basic environment of the small intestine |
| list three characteristics of enzymes | protein molecuels, biological catalyst, hydrolases |
| name the end products of digestion for protiens | amino acids |
| name the end products of digestion for carbohydrats | simple sugars |
| name the end products of digestion for fats | fatty acids and glycerol |
| what do segmental movements do | they serve mainly to mix foodstuffs with digestive juices |
| define segmental movements | local constrictions of the organ wall that occur rhythmically |
| define peristalic movements | the major means of propelling food through most of the digestive viscera |
| define substrate | the material or substance or molecules on which an enzyme acts on |
| define enzyme | large protein molecules produced by body cells also biological catalysts |
| define catalyst | they increase the rate of a chemical reaction without themselves becoming part of the product |
| define hydrolase | an enzyme that catalyzes the hydrolysis of a chemical bond |
| hydrolysis | the chemical breakdown of a compound due to the reaction with water |
| define controls | specimens or standards agaianst which experimental samples are comapred |
| which enzyme is necessary for starch digestion | salivary amylase |
| what reagent is used for the starch test | lugols IKI solution positive = blue black negative= no color change |
| what reagent is used for sugar test | benedicts solution positive= green to orange percipitat |
| what enzyme is used for protein digestion | trypsin |
| what substance is used to test for hydrolysis | BAPNA Positive= yellow negative=clear |
Created by:
pvnaaj
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