Swallowed food does not enter the airway leading to the lungs because as the food is swallowed‚ a flap of connective tissue closes over the opening of the trachea to prevent food from clogging these airways. 16. During digestion‚ enzymes such as amylase break chemical bonds between the sugar monomers in starches. Digestive enzymes also break down foods and make the nutrients available to the body. 17. Mechanical digestion includes the muscles of the stomach contracting to mix stomach fluids and
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Let’s start. • Nutrition is a study of the interactions occurring between you & food. • Nutrients – about 45 substances that provide energy‚ structure or regulation of body processes. • Essential nutrients- need them‚ but can’t make them or fast enough. • Macronutrients- need in large amounts (carbohydrates‚ fats/lipids‚ proteins – provide energy/calories) • Micronutrients – need in very small amounts (vitamins‚ minerals- no energy/calories) • Phytochemicals- another category in plant food-
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Akash G 12M 1.0 - Disease 1.1 Pathogens: Pathogens are disease causing microorganisms Disease is the symptoms displayed on a person following an infection‚ a malfunction of the body or mind Infectious Disease: Caused by bacterium‚ virus‚ fungum transferred from one person to another Non Infectious Disease: A disease that is not caused by a transmitted pathogen (e.g. Stroke‚ arthritis‚ obesity) Interface: A surface or boundary between two systems For a microorganism to be a pathogen‚ it
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Understand the functioning of the body systems associated with energy metabolism Role of energy in the body Lindsey Dickinson Metabolic rate The term‚ ’Metabolism‚’ refers to the entire range of biochemical processes that happen within a person or living organism. Metabolism is something that consists of both. Aerobic metabolism converts one glucose molecule
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Chapter 1: What is Nutrition? What Drives Our Food Choices? We Need to Eat and Drink to Live Nutrients: compounds in foods that sustain your body processes. There are 6 classes of nutrients: carbs‚ fats (lipids)‚ proteins‚ vitamins‚ minerals and water 3 of 6 classes of nutrients: carbohydrates‚ fats‚ protein- provide energy in the form of kilocalories 2 of 6 classes of nutrients: vitamins and minerals‚ help regulate many body processes‚ including metabolism 1 of 6 class of nutrients- water
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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‚
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blood stream‚ for instance. Digestion is a form of catabolism: a break-down of larger food molecules to smaller ones. In mammals‚ food enters the mouth‚ being chewed by teeth‚ with chemical processing beginning with chemicals in the saliva from the salivary glands. This is called mastication. Then it travels down the esophagus into the stomach‚ where hydrochloric acid kills most contaminating microorganisms and begins mechanical break down of some food (e.g.‚ denaturation of protein)‚ and chemical alteration
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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:
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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
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AS Biology Unit 1 page 1 AQA AS Biology Unit 1 Contents Specification Biological Molecules Cells Human Physiology Disease Appendices Chemical bonds Carbohydrates Lipids Proteins Biochemical Tests Enzymes Eukaryotic Cells Prokaryotic Cells Cell Fractionation Microscopy The Cell Membrane Movement across Cell Membranes Exchange The Gas Exchange System Lung Diseases The Heart Coronary Heart Disease The Digestive System Cholera Lifestyle and Disease Defence
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