Dissecting a Frog Lab Report #3 May 18‚ 2011 Purpose: The purpose of the lab was to dissect a frog to better understand the parts of it and their purposes. Materials: dissecting scissors‚ a frog‚ a dissecting tray‚ a scalpel‚ and a probe Procedure: The procedure began when the sides of the frog’s mouth were cut. Then‚ the frog’s internal and external structures were observed. Observations were recorded. After that‚ the liver‚ gallbladder‚ eggs‚ and fat bodies were removed. Results:
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Chemical and Physical Processes of Digestion exercise T 8 he digestive system is a physiological marvel‚ composed of finely orchestrated chemical and physical activities. The food we ingest must be broken down to its molecular form for us to get the nutrients we need‚ and digestion involves a complex sequence of mechanical and chemical processes designed to achieve this goal as efficiently as possible. As food passes through the gastrointestinal tract‚ it is progressively broken down
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Exam: 46.4‚45‚47‚48 Lecture outline for the zoology unit revised 2010 Introduction to animal form & function and regulation of TB (ch. 40 & Concept 42.4) This first reading assignment reviews 5 major principles re living organisms: 1. Physical laws & the environment constrain the size & shape of organisms. 2. Form & function are correlated at all levels of organization. 3. Chemical energy in food is used to sustain form & function. 4. Many animals (& other organisms) regulate
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HUN 4446 Exam 2 Study Guide Lactose Mal Digestion/ Malabsorption 1. What are the products of lactose digestion? -The products of lactose digestion are glucose and galactose. 2. What is lactase deficiency? -Lactase deficiency is a deficiency in the enzyme that breaks down lactose. The causes of lactase deficiency include congenital defects‚ secondary lactase deficiency‚ and primary (acquired). 3. Define lactose maldigestion‚ identify the potential etiologies of lactose maldigestion‚ and describe
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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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their opinions of the policy among others. Faculty was interviewed on their thoughts and how the policy helped with the classroom. Administration helped with the reasoning behind implementing the policy and some hints to phase outs of the computer labs located in the college of business. We found that students believed that the policy is not effective‚ but should be enforced. For faculty‚ some believe that the policy is helpful for learning and welcome laptops in the classroom while others feel
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combination of organs which have been arranged together to help carry out its particular function of turning food into the energy which is necessary to survive and packaging the excess residue for waste disposal. Digestion involves the breakdown of food into smaller components. The process of digestion has many stages with the first starting in the oral cavity. Within the system‚ food passes through a tube called the alimentary canal‚ more commonly known as the gastrointestinal tract. The tract is made up
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PhysioEx 9.0 Ex. 8: Chemical and Physical Processes of Digestion - Review Sheet ACTIVITY1 Assessing Starch Digestion by Salivary Amylase 1. List the substrate and the subunit product of amylase. _starch & maltose respectively__ 2. What effect did boiling and freezing have on enzyme activity? Why? How well did the results compare with your prediction?__Boiling caused amylase to be denatured‚ thus inactivating the enzyme. Freezing has no effect. The function of an enzyme is directly related
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When rationally thinking about the gastrointestinal tract or digestion‚ nearly all of its functions are regulated by the autonomic nervous system‚ or involuntary‚ meaning that we do not consciously have to contemplate digestion for digestion to occur. With this being stated‚ it would make sense that almost the entire gastrointestinal tract is made up of smooth muscle. Smooth muscle is very distinctive from the other types of muscle in the body due to the fact that it is not controlled consciously
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and stored in the gallbladder. Bile flows into a tube called the common bile duct‚ into which pancreatic juice‚ a digestive juice from the pancreas‚ also flows. The contents of the common bile duct flow into the small intestine‚ where most of the digestion and absorption of food into the bloodstream takes place. Indigestible materials pass through the large intestine and then into the cloaca‚ the common exit chamber of the digestive‚ excretory‚ and reproductive systems. The respiratory system consists
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