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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.
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- True
- False
Frage 2
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why do we need to eat?
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we eat to gain energy
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food supplies raw materials used to build and repair body tissues
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both of the above
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neither of the above
Frage 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.
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- True
- False
Frage 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
Frage 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
Frage 6
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simple and complex carbohydrates are a major source of energy
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- True
- False
Frage 7
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fats help the body as they
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absorb fat soluble vitamins
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are part of cell membranes, nerve cells and certain hormones
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both of the above
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neither of the above
Frage 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
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saturated
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unsaturated
Frage 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
Frage 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
Frage 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
Frage 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
Frage 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
Frage 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
Frage 15
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proteins are polymers of amino acids
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- True
- False
Frage 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
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- True
- False
Frage 17
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organic molecules that the body needs in very small amounts are called vitamins
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- True
- False
Frage 18
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most vitamins are needed by the body to help perform chemical reactions
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- True
- False
Frage 19
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there are two types of vitamins
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fat soluble and water soluble
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unsaturated and saturated
Frage 20
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these vitamins are fat soluble
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A,C, D, E
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A, D ,E, K
Frage 21
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water soluble vitamins include
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C, D,,B
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C, B
Frage 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
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- True
- False
Frage 23
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inorganic nutrients that the body needs usually in small amounts are called minerals
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- True
- False
Frage 24
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a balanced diet provides nutrients in adequate amounts and enough energy for a person to maintain a healthful weight
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- True
- False
Frage 25
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a balanced diet provides nutrients in adequate amounts and enough energy for a person to maintain a healthful weight
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- True
- False
Frage 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
Frage 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
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- True
- False
Frage 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
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- True
- False
Frage 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
Frage 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
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- True
- False
Frage 31
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fat contains about 9 calories per gram and carbohydrate and protein contain 4 calories per gram
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- True
- False
Frage 32
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foods that contain a high amount of any type of fat are high in calories
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- True
- False
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