Science and Technology in Society
2.4.b. People eat different foods in order to satisfy nutritional needs for carbohydrates, proteins and fats. (1) Explain that food is a source of carbohydrates, proteins and fats -- nutrients that animals (including humans) convert to energy they use to stay alive and grow. (4) Compare and contrast how different cultures meet needs for basic nutrients by consuming various foods.
Properties of Matter
6.1 -- Materials can be classified as pure substances or mixtures, depending on their chemical and physical properties
6.1.a Mixtures are made of combinations of elements and/or compounds, and they can be separated by using a variety of physical means.
6.1.b Pure substances can be either elements or compounds, and they cannot be broken down by physical means.
Structure and Function
7.2 -- Many organisms, including humans, have specialized organ systems that interact with each other to maintain dynamic internal balance.
7.2.a All organisms are composed of one or more cells; each cell carries on life-sustaining functions.
Science and Technology in Society
7.4 -- Technology allows us to improve food production and preservation, thus improving our ability to meet the nutritional needs of growing populations.
7.4.a Various microbes compete with humans for the same sources of food. (4) Discover and discuss how humans use bacteria to produce food and identify examples. (5) Compare and contrast the role of bacteria in food production and food spoilage. (6)Evaluate and report how each method of food preservation including dehydration, pickling, irradiation and refrigeration works to stop or inhibit bacterial growth and give examples of each.