Digestive System Study Guide 1. Define the term digestion and explain its significance. The chemical and mechanical process of breaking down food and its absorption. Its essential to maintaining life. 2. Distinguish between mechanical digestion and chemical digestion. Chemical digestion is where complex food molecules are broken down to the basic building blocks by enzymes. Mechanical digestion is chewing‚ churning and segmentation. 3. Discuss the five digestive processes that overview the many functions
Premium Digestion Liver Digestive system
results showed that neither starch nor reducing sugar was present in the water surrounding tubes A and B at the beginning of the experiment. (7 marks) water bath at 37ºC starch + water starch + amylase + water dialysis tubing test tubes A B water bath at 37ºC starch + water starch + amylase + water dialysis tubing test tubes A B (a) What results would be expected after one
Premium Enzyme Chemistry Starch
w w w e tr .X m eP e ap UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level .c rs om *0485738200* BIOLOGY Paper 2 Structured Questions AS Candidates answer on the Question Paper. Additional Materials: Electronic calculator Ruler (cm/mm) 9700/21 October/November 2009 1 hour 15 minutes READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name in the spaces provided at the top of this
Premium Trophic level
Starch From Wikipedia‚ the free encyclopedia Starch Identifiers CAS number 9005-25-8 EC-number 232-679-6 RTECS number GM5090000 Properties Molecular formula variable Molar mass variable Appearance white powder Density 1.5 g/cm3 Melting point decomp. Solubility in water none Hazards MSDS ICSC 1553 EU Index not listed Autoignition temperature 410 °C (verify) (what is: / ?) Except where noted otherwise‚ data are given for materials in their standard state
Premium Starch
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
Premium Digestion Stomach
Enzymes are protein‚ they are used to catalyse metabolisms in all organisms. They break down complex molecules and build up complex molecules from simple molecules‚ these two processes are catabolic reaction and anabolic reaction respectively. Enzymes are needed in these two processes to catalyse releasing and taking up ATP molecules. Different sequence of amino acid produces different structure of protein‚ which determines the property of protein‚ thus each kind of enzymes has its unique active
Premium Metabolism DNA Enzyme
Duodenum Jejunum Ileum Large intestine Rectum Pancreas Spleen Kidney Urinary Bladder Pyloric sphincter Gastrin Secretin Lipase Enterogastrone Salivary amylase Pepsin Villi Trachea Larynx Lungs (know the various lobes) Epididymus Vas deferens Ovaries Uterus/Uterine horn Penis Testis Right ventricle Left ventricle
Premium Heart Blood Digestion
used to grab‚ chew and push the food back to the oesophagus. Both the mouths produce saliva to start the chemical digestion and to aid with the foods transportation down the oesophagus. Most monogastric animals‚ excluding dogs‚ produce the enzyme amylase‚ which is made in the pancreas
Premium Digestion Digestive system Stomach
Enzymes An enzyme is a protein used to speed up the rate of a chemical reaction. Because they regulate the rate of chemical reactions‚ they are also called catalysts. There are many‚ many different types of enzymes‚ because for each chemical reaction that occurs‚ an enzyme specific to that reaction must be made. To act on a substrate‚ an enzyme must contain an active site. The active site is the area on the enzyme that allows the substrate and enzyme to fit together. The amino acids that are present
Premium Enzyme PH
Concentarion ENZYME LAB Introduction- Enzymes are proteins that speed up the rate of reactions in living things. In this lab‚ we will perform four experiments exploring the way enzymes work. PART A: pH SPECIFICITY Every enzyme has a specific pH at which it works best. In this section‚ you will determine which pH is best for the enzyme‚ catalase. Living tissues produce the enzyme catalase‚ which is able to break down hydrogen peroxide into oxygen gas and water. The reaction is
Free Enzyme Starch