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Contemporary Nutrition 10th Edition by Anne Smith,Angela Collene
النسخة 10الرقم المعياري الدولي: 978-0078021374Contemporary Nutrition 10th Edition by Anne Smith,Angela Collene
النسخة 10الرقم المعياري الدولي: 978-0078021374 تمرين 1
Answer to the following multiple choice question is below Sugars, starches, and dietary fibers are examples of
A) proteins.
B) vitamins.
C) carbohydrates.
D) minerals.
A) proteins.
B) vitamins.
C) carbohydrates.
D) minerals.
التوضيح
موثّق
موثّق
Sugar are composed of carbon, hydrogen, and oxygen. Starch is composed of amylose and amylopectin. Both, amylose and amylopectin are composed of glucose, which is form of sugar. Dietary fiber comprises of non-starch polysaccharides and other associated materials that are a combination of carbon, hydrogen, and oxygen. Breakdown of sugars, and starches results in the release of energy. Dietary fiber largely passes on undigested but helps in the digestion process by contributing to the bowel movements.
Proteins are made of amino acids. They contain carbon, hydrogen and oxygen, but also necessarily have nitrogen as one of their components. Thus, sugars, starches and fibers cannot be considered as proteins.
Hence, option "a" is incorrect.
Vitamins provide important functions such as protecting vision, clotting of blood, providing immunity, etc. Despite being organic in nature, their metabolism does not result in the release of energy. Thus, sugars, starches and fibers cannot be considered as vitamins.
Hence, option "b" is incorrect.
Minerals are inorganic in nature and do not have any combination of carbon, hydrogen, and oxygen. Also being inorganic in nature, they do not provide any energy. Thus, sugars, starches and fibers cannot be considered as minerals.
Hence, option "d" is incorrect.
Carbohydrates are organic substance made up of carbon, hydrogen and oxygen. Metabolism of carbohydrates results in the release of energy. Every gram of carbohydrate provides 4 calories of energy. Since sugars, starches and fibers have the characteristics same as those of the carbohydrates, they are considered as carbohydrates.
Therefore, the correct option is option
.
Proteins are made of amino acids. They contain carbon, hydrogen and oxygen, but also necessarily have nitrogen as one of their components. Thus, sugars, starches and fibers cannot be considered as proteins.
Hence, option "a" is incorrect.
Vitamins provide important functions such as protecting vision, clotting of blood, providing immunity, etc. Despite being organic in nature, their metabolism does not result in the release of energy. Thus, sugars, starches and fibers cannot be considered as vitamins.
Hence, option "b" is incorrect.
Minerals are inorganic in nature and do not have any combination of carbon, hydrogen, and oxygen. Also being inorganic in nature, they do not provide any energy. Thus, sugars, starches and fibers cannot be considered as minerals.
Hence, option "d" is incorrect.
Carbohydrates are organic substance made up of carbon, hydrogen and oxygen. Metabolism of carbohydrates results in the release of energy. Every gram of carbohydrate provides 4 calories of energy. Since sugars, starches and fibers have the characteristics same as those of the carbohydrates, they are considered as carbohydrates.
Therefore, the correct option is option
.
Contemporary Nutrition 10th Edition by Anne Smith,Angela Collene
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