Question 1
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Molecules in food contain chemical energy that cells use to produce ATP. Food also supplies raw materials your body needs to build and repair tissues.
Question 2
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why do we need to eat?
Question 3
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nutrients are substances in food that supply the energy and raw materials your body needs for growth, repair and maintenance.
Question 4
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the nutrients that the body needs include:
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water, carbohydrates and fats
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water, carbohydrates, fats and minerals
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water, carbohydrates, fats and proteins
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water, carbohydrates, fats, proteins, vitamins and minerals
Question 5
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water is the most important nutrient because:
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every cell in the human body needs water
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many of the body's processes including chemical reactions take place in water
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water makes up the bulk of blood, extracellular fluid and other bodily fluids
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water can be lost from the body when you sweat, in urine and with every breath you exhale
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humans need at least 1 liter of fluid each day
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all of the above
Question 6
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simple and complex carbohydrates are a major source of energy
Question 7
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fats help the body as they
Question 8
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when there are only single bonds between the carbon atoms in the fatty acids, each carbon atom has the maximum number of hydrogen atoms and the fat is said to be
Question 9
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these fats have one or more double bonds between carbon atoms which reduces the number of hydrogen atoms in their fatty acids.
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saturated fats
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unsaturated fats
Question 10
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these fats are usually liquid at room temperature, such as vegetable oil
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saturated fats
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unsaturated fats
Question 11
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unsaturated fats that are modified by adding hydrogen to them or processed are
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trans fats
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saturated fats
Question 12
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these fats are solid at room temperature and have a longer shelf life
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saturated fats
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unsaturated fats
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trans fats
Question 13
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because many vegetable oils contain more than one double bond, they are called
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saturated
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polyunsaturated
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unsaturated
Question 14
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proteins have a variety of roles in the body including:
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proteins supply raw materials for growth and repair of structures such as skin and muscle
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many enzymes that control chemical chemistry by increasing the rates of chemical reactions are made of proteins
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proteins have regulatory and transport functions (e.g., insulin is a protein that regulates blood sugar levels and hemoglobin, a protein found in red blood cells helps transport oxygen )
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proteins can be used as energy sources when other nutrients such as carbohydrates are in short supplu
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all of the above
Question 15
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proteins are polymers of amino acids
Question 16
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the body is able to synthesize 12 of the 20 amino acids used to make proteins and the other 8 are called essential amino acids
Question 17
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organic molecules that the body needs in very small amounts are called vitamins
Question 18
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most vitamins are needed by the body to help perform chemical reactions
Question 19
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there are two types of vitamins
Question 20
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these vitamins are fat soluble
Question 21
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water soluble vitamins include
Question 22
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fat soluble vitamins can build up small deposits of these vitamins for future use, but water soluble vitamins dissolve in water and cannot be stored in the body and therefore should be included in foods eaten each day
Question 23
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inorganic nutrients that the body needs usually in small amounts are called minerals
Question 24
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a balanced diet provides nutrients in adequate amounts and enough energy for a person to maintain a healthful weight
Question 25
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a balanced diet provides nutrients in adequate amounts and enough energy for a person to maintain a healthful weight
Question 26
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food labels can be used to choose healthful foods because:
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they provide general information about nutrition
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they provide specific information about the product
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they can be used to determine if you are consuming enough of some of the important vitamins and minerals
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all of the above
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none of the above
Question 27
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when using food labels it is important to remember that percent daily values are based on a 2000 calorie diet
Question 28
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people who are more active than average have greater energy needs and when a person stops growing or becomes less active their need for energy decreaes
Question 29
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these factors contribute to the rise of obesity in the US over the last several decades
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inactive lifestyles
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high calorie diets
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both of the above
Question 30
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The American Heart Association recommends a diet with a maximum of 30% of calories from fat, of which only 7% should be from saturated fats and 1% from trans fats
Question 31
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fat contains about 9 calories per gram and carbohydrate and protein contain 4 calories per gram
Question 32
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foods that contain a high amount of any type of fat are high in calories