Suggested answers to Practical Workbook for SBA Ch 1 Introducing biology Practical 1.1 Design an investigation of the effect of fresh pineapple on the setting of jelly Propose a hypothesis (p. 1-2) It is the fresh pineapple that causes the jelly to remain in liquid form. Design and perform an experiment (p. 1-2) 1 (Answer varies with Ss. The recommended quantity of jelly powder and water is stated on the packet of the jelly powder. Jelly will not set if it is too dilute.)
Premium Cell wall Enzyme Sodium chloride
The digestive system helps the body to break down food into smaller molecules to help the body to absorb the nutrients it needs and lets the body digest the energy from the food. Enzymes chemically react with the food and act as a catalyst to speed the process up. The body needs each food group from different reason: Dairy provides calcium-keeps bones strong. Carbohydrates for quick release of energy. Fats provide a slow release of energy throughout the day. Protein builds and repairs muscle.
Premium Digestion
digestive system Tongue • For taste • Pushing food into the esophagus Papillae • Rough edges of that tongue that contain the taste buds Hard and soft palate • Separate the nasopharynx from the mouth Parotid gland • Secretes saliva (amylase enzyme) which breaks down starches into sugar Stomach • Stores food • Begins digestion of tissues and proteins by secretion of gastric juices. These juices are very acidic (pH 1-2). The semi-digested stomach contents are called chyme Esophagus
Premium Digestive system Digestion Stomach
–digesting (amylase) enzymes‚ initiate swallowing reflex - Enzyme: alpha amylase with cooked starch as substrate – starch digestion enzyme an enzyme that catalyses the breakdown of starch into sugar - The Functions of Saliva - 1. Moistens and lubricates food‚ permitting swallowing 2. Holds taste producing substances in solution and bring them in contact w/ taste buds 3. Dilutes acids and salts‚ protecting mucosa and teeth 4. Cleansing effect on teeth‚ gums and buccal mucosa 5. Amylase may be
Free Digestion Small intestine Nutrition
SPM Biology – Answering Techniques in Paper 3 SPM Biology candidates typically commit the mistake of thinking that the length of their answered essay or structured questions equates to marks deserve‚ under the formula‚ Length of Structure Answer/Essay = Marks. This is wrong and Berry Berry Easy wishes to clear the air regarding this issue. It is never about how long you write but more about how accurate you write. So for Berry Readers who can write long answers but never seemed to score well‚
Premium Hypothesis Enzyme Starch
secretion produced by the liver‚ stored in the gall bladder and released into the small intestine. It acts as an emulsifying agent‚ physically breaking up large fat droplets into smaller ones to increase the surface area of food being digested. Amylase: enzyme which acts on carbohydrates Protease: enzyme which acts on proteins Lipase: enzyme which acts on lipids (fats) Villi: The finger-like projections that increase the surface area of the lining of the small intestine lining. Microvilli:
Free Digestion
Ethanol Production From Food Waste A PROJECT REPORT Submitted in partial fulfillment of the requirements for the Award of the Degree of Bachelor of Technology (Biotechnology) Under the Guidance of Dr. S.M. Bhatt (Associate Professor) Department of Biosciences By Abhishek Agarwal Registration No. 10809065 Roll No. RB18B2A07 Department of Biotechnology Engineering Lovely Professional University Phagwara –144401 November 2011 CERTIFICATE This is to certify that Abhishek
Free Waste Waste management Biodegradable waste
acids and glycerol‚ otherwise known as chemical building blocks. Enzymes are chiefly responsible for carrying out chemical digestion and are secreted in the central cavity of the alimentary canal. Digestive enzymes include salivary and pancreatic amylase‚ present in the mouth and small intestine‚ maltase and lactase which are also present in the small intestine and are involved with carbohydrate digestion. Pepsin which is present in the stomach and chymotrypsin present in the small intestine both
Premium Digestion Liver
up the process of digestion by lowering the activation energy for the reaction. 5. Work at body temperature. 6.1.3 State the source‚ substrate‚ products and optimum pH conditions for one amylase‚ one protease and one lipase. Amylase Protease Lipase Enzyme Salivary Amylase Pepsin Pancreatic Lipase Source Salivary Glands Chief cells in stomach lining Pancreas Substrate Starch Proteins Triglycerides such as fats and oils
Premium Digestion Enzyme
main purpose of builders is that of supporting surfactants action. It performs in stain removal‚ particularly soil and fats. [3]. Enzymes are also added as an effective method of breaking down stubborn stains; mostly food stains. For example‚ amylases to remove stains created by polysaccharides and proteases that remove stains caused by proteins [4]. There exist many different types of enzymes and builders‚ and a lot of research has been done‚ for example on the suitability of the properties
Premium Laundry detergent Laundry