The functions of the digestive system are: a. To ingest food b. To digest food into small nutrients so that the molecules can pass through membranes c. To absorb nutrient molecules d. To eliminate indigestible remains The following is not considered an accessory organ of the digestive system: a. Stomach Children have (__) deciduous teeth and adults have (__) permanent teeth. a. 20‚ 32 The folds in the stomach are called: a. Rugae The energy source preferred by cells is: a. Glucose
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precipitate. Starch give positive result in Iodine test as the colour of solution change from yellow to dark blue. Glucose is the simplest carbohydrates that are monosaccharide or simple sugar. Starch consisting of a large number of glucose units joined together by glycosidic linkage and known as polysaccharide‚ that is polymers of sugar. Saliva that contains salivary amylase enzyme‚ which breaks down the glycosidic linkage between glucose that found in starch and hydrolyzes starch into glucose
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thus another method; dyed grain (Pitiphunpong et al.‚ 2011) obtain low precision if the proportion of the adulteration is low. Rice starch consists of two fractions; amylopectin is the main fraction and amylose is the second. The ratio of amylose and amylopectin is an important factor that distinguishes the cooking characteristics of rice. Non glutinous rice starch consists of 10-34% percent of amylose which makes the rice less sticky and harder texture. The amylose content of milled rice may be
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set-up * Strainer * Container * Spoon * Mortar and Pestle * Knife and Chopping board * Red beet‚ turmeric powder‚ leftover blueberries * Baking soda * Vinegar * Corn syrup * Corn starch * Procedure Each plant was finely chopped and ground and individually boiled in water. Once the water was evidently stained with the pigment of the plant used‚ the heat source was put off and the contents of the pot were left to cool.
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liquid or became solid due to clot formation‚ etc. After each observation note which results indicate production of the given enzymes and which results indicate non-production of the given enzyme by placing a “+” or “-“in the appropriate squares. A. Starch Hydrolysis Note: the color of the medium immediately surrounding the colonies after addition of iodine on PDA plate. Organism Result + or - Appearance/Observations Bacillus cereus Escherichia coli B. Gelatin Hydrolysis (gelatinase
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* Color reaction of starch when mixed with Iodine solution Introduction: Statement: * How would the varying solutions react when introduced with the Iodine solution? Hypothesis: * If a solution is rich in starch then it will react with iodine solution and change to a bluish-black color (looks Brown) Materials: Items: * 8 test tubes‚ pipet‚ iodine‚ onion juice‚ potato juice‚ sucrose solution‚ glucose solution‚ distilled water‚ fructose solution‚ starch solution‚ & beats juice
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Test #1 * Add a small piece of cracker in test tube #1 and add Lugol’s solution. Observation #1 * The cracker turned a black colour when the Lugol’s solution was added to it. This was a positive result‚ meaning that the cracker contains starch. Test #2 * Add a bigger piece of cracker in test tube #2‚ add 5 mL of Benedict’s solution‚ place in a boiling water bath‚ and record observations after 5 minutes. Observation #2 * There was no change in colour after the Benedict’s solution
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demonstrate dialysis tubing we used water‚ starch and iodine. When starch and iodine react together they form a dark brown color. Materials Rubber band Dialysis bag Beaker Glucose solution Iodine solution Water‚ thread Methods Cut a piece of dialysis tubing that has been soaking in water approximately 40 cm (approx. 16 in) long‚ Tie the end of the dialysis tubing with two or more knots. Fill the bag halfway with glucose solution. And add 4 full droppers of starch solution to the bag. Hold the open
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Essay Questions Exam 3 Chapter 40 a. Describe a key function of each of the four types of tissues found in animals. 1. Epithelial tissue (squamous‚ columnar‚ cuboidal) makes up the lining and coverings. This type of tissue is found in the skin (epidermis and dermis)‚ surrounding the organs of the body‚ and outer layer of capillaries (diffusion). 2. Connective tissue (loose‚ adipose‚ blood‚ fibrous‚ bone) holds organs in place and attaches epithelial tissue to other underlying tissues. A collagenous
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that contain gums which hold teeth‚ the roof of the mouth is the palate and the tongue occupies the floor of the mouth. The salivary glands have ducts that open in the mouth. Function: The mouth is where the first step of digestion begins. Known as mechanical digestion‚ this involves chewing with your teeth to break the food into smaller pieces. The tongue moves the food around to assist chewing and together with saliva‚ the food is lubricated for ease of swallowing. Salivary glands Structure:
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