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teeth and microbes
Quiz by harshith
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Life Processes Identify and define the seven life processes (MRS GREN). Classification Group living organisms based on observed similarities and differences. Classify vertebrates into taxonomic groups based on visible physical characteristics. Construct a dichotomous key to classify vertebrates. Cells Compare the structure of generalised plant and animal cells, and selected microbes (e.g. bacteria, fungi and Amoeba) Distinguish among cell wall, cell membrane, nucleus, cytoplasm, temporary and permanent vacuoles, mitochondrion, chloroplast, endoplasmic reticulum and ribosomes. Relate the structure of organelles to their functions; Identify specialised cells such as blood cells, ciliated epithelial cells, nerve cells, root hair cells, sperm cells and egg cells. Explain the importance of cell specialisation in multicellular organisms; include hierarchy of cells, tissues, organs; organ systems and then organism Diffusion, Osmosis, Active transport and Osmoregulation Explain the processes of diffusion, osmosis and active transport. Identify everyday instances of these processes occurring. Discuss the importance of diffusion, osmosis and active transport in living systems. Nutrition in Plants Describe the process of photosynthesis in green plants; test for end products, starch or reducing sugar (glucose). Relate the structure of the leaf of a flowering plant to its function in photosynthesis; draw and label the external features and the internal structure (cross section) of a leaf as seen in cross section under the light microscope. Nutrition in Humans Discuss the importance of a balanced diet in humans. State components of a balanced diet (carbohydrates, fats, proteins, vitamins and minerals, water and roughage and their roles) along with the results of their deficiency or surplus. Suggest dietary recommendations for treating and preventing named deficiency and physiological diseases (such as those outlined in the manual and your notes). Perform tests to distinguish among food substances - Test for proteins (Biuret), fats (grease spot), starch (iodine), reducing sugars (Benedict’s solution). The Digestive System in Humans Relate the structures of the human alimentary canal to their functions; Draw and label simple diagrams of the alimentary canal and internal structure of a tooth required. Describe mastication and the role of teeth in the mechanical breakdown of food to be included. (Compare types of teeth in humans and compare types of teeth in herbivores and carnivores.) Explain the role and importance of enzymes role of digestive enzymes in the mouth, stomach and pancreatic enzymes in the small intestine. Discuss properties of enzymes. Deduce from tables and graphs the effects of temperature and pH on enzyme activity. Experimental Skills Follow all drawing rules as outlined in the drawing skills checklist posted in the classroom (including calculation of magnification).Teeth and digestion year 4Teeth and tooth decayKinds of teeth and their functions Developmental disturbances of teeth and tongueYear 4- Unit 1: Teeth and digestion End of Lesson 2The human body (man’s body) is very beautiful. It consists of arms, legs, a head, a neck and so on. The eyes help us to see, the ears help us to hear, the mouth and lips help us to speak and eat food. All people have different faces. There are two eyes, a nose, a mouth on our face. We have hair, a neck, two shoulders, ten fingers, ten toes, ten nails, two feet, two knees, two cheeks, two eyebrows, a forehead, a chin. Everybody has his/her own skin. It comes in many colors. People who live in Africa have brown or black skin. People who live in Europe have white skin. Our hair can be straight or curly, long, short, dark, blonde, gray. Humans have muscles, fat, bones, joints. There are two kidneys, two lungs, a heart, a stomach, a liver and other organs in humans’ bodies. There are 32 teeth and one tongue in our mouth. Some people (kids and adults) lose some of their teeth, so they don’t have 32 teeth.Your Skin Do you know that your skin is the largest organ in your body? Home Economics and Livelihood Education 7 Seibo College 32 You need to clean and protect your skin from the different elements to maintain a clear and smooth looking skin, free from cuts and wounds. Ways of taking care of your skin: a. Eat nutritious food. b. Treat wounds and other skin disorder immediately. c. Take a bath using luffa. d. Apply skin softener. e. Have enough sleep. Your Hair Your hair is said to be your crowning glory. It gives your face an added beauty and radiant looks. So that, keeping your hair shinning through regular washing and combing will do wonders to your look. Suggested ways for keeping your hair glossy and healthy: a. Wash your hair regularly or as it becomes dirty. b. Comb or brush your hair everyday. c. Each time you wash your hair, clean your comb as well. d. You may use soapy water or shampoo. e. For a softer hair, you may use a conditioner. Your Teeth and Gums Home Economics and Livelihood Education 7 Seibo College 33 Caring for your teeth and gums are equally important as well. Never neglect your teeth, otherwise you will not be able to give your close-up smile. Remember the following in caring for your teeth and gums: a. Brush your teeth after each meal. b. Rinse your mouth with water after eating between meals. c. Use dental floss to remove food particles between the teeth. d. Visit your dentist at least twice a year for tooth examination. e. Eat foods rich in vitamins and minerals. Your Hands and Feet One of the most useful part of the body is your hand, which manages all your tasks together with your feet, which support the entire body. Ways on taking care of your hands and feet: a. Always keep your hands clean. b. Wash your hands before and after eating. c. Wash your feet before going to sleep. d. If your feet easily perspire, soak them in warm salty water for about 15 minutes daily. e. Dry with a clean towel. Dust with powder. Home Economics and Livelihood Education 7 Seibo College 34 If you have any questions, you can go to your learning facilitator, but if everything is clear to you, proceed to the next activities. Your Nails: a. Clean your finger nails with soapy water. b. Keep your nails short. c. Use a nail cutter to trim them. d. In trimming , follow the curve of your nails. e. Use a nail file to keep the edges smooth. My dear learners, you are now well informed with the different ways of keeping yourself clean and healthy. You are old enough to be responsible in keeping yourself neat and clean. Therefore, keep these in mind; your personal cleanliness is your primary duty to