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Transcript
Name:______________________________________ Water The liquid of life… Demos Observe the following: Substance 1 in water Substance 2 in water Substance 3 in water What does dissolve mean? to make a _______________________________ Ex: table salt (NaCl) Water! Water’s ability to dissolve other chemicals is one of ____________________________________ When a material dissolves into tiny pieces, it can ___________________________________ Other important chemicals Carbohydrates, fats, and proteins ___________________________________: are sugars and starches. ___________________________________ are used to sweeten foods and drinks; fruits and vegetables also contain sugar ___________________________________ are found in foods such as bread and rice Plants use the ___________________________________to make carbohydrates from carbon dioxide and water Carbohydrates are like ___________________________________–they provide energy Fats Fats are also ___________________________________. They store ___________________________________that are released when they are broken down Fats are found in ___________________________________ Fats are related to ___________________________________ Proteins Proteins are another type of ___________________________________ needed for life Meats such as ___________________________________contain large amounts of protein Like fats and carbs, proteins also ___________________________________to living things Proteins help control ___________________________________, like hear rate Proteins are the ___________________________________ Protein Protein chains fold into ___________________________________ Proteins with different shapes ___________________________________ If a protein twists into the wrong shape or has a missing part, ___________________________________. DNA (deoxyribonucleic acid) contains the code that’s needed to produce __________________. The code is carried out by ___________________________________ Importance of Nutrients Your body must get a regular supply of ___________________________________from the food that you eat in order to function properly In addition to these chemicals, your body also needs ___________________________________. ___________________________________ are natural substances that your body needs to work properly Vitamins are used in your body for ___________________________________ Nutrients are chemicals that come from foods that are ___________________________________ KEY Water The liquid of life… Demos Observe the following: Substance 1 in water Substance 2 in water Substance 3 in water Results Observe the following: Sugar in water- dissolves Salt in water-dissolves Food coloring in water-dissolves What does dissolve mean? to make a solution of, as by mixing with a liquid Ex: table salt (NaCl) Water! Water’s ability to dissolve other chemicals is one of the most important properties When a material dissolves into tiny pieces, it can move more easily from cell to cell Other important chemicals Carbohydrates, fats, and proteins Carbohydrates: are sugars and starches. Sugars are used to sweeten foods and drinks; fruits and vegetables also contain sugar Starches are found in foods such as bread and rice Plants use the energy from sunlight to make carbohydrates from carbon dioxide and water Carbohydrates are like fuel for your body –they provide energy Fats Fats are also fuel chemicals. They store larger amounts of energy that are released when they are broken down Fats are found in meats, butter, and cheese. Fats are related to oil Proteins Proteins are another type of chemical needed for life Meats such as beef and chicken contain large amounts of protein Like fats and carbs, proteins also provide energy to living things Proteins help control body activities, like hear rate Proteins are the basic part of human cells Protein Protein chains fold into a particular shape to carry out a particular function Proteins with different shapes carry out different functions If a protein twists into the wrong shape or has a missing part, it may not be able to do its job. DNA (deoxyribonucleic acid) contains the code that’s needed to produce protein. The code is carried out by RNA Importance of Nutrients Your body must get a regular supply of fats, proteins, and carbohydrates from the food that you eat in order to function properly In addition to these chemicals, your body also needs minerals and vitamins. Minerals are natural substances that your body needs to work properly Vitamins are used in your body for growth and activity Nutrients are chemicals that come from foods that are needed for life