Multiple Choice
Which of the following mechanisms does not generate ATP using an electron transport chain?
33. The Organic Chemistry of Metabolic Pathways
Energy Production in Biochemical Pathways
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Which of the following statements is true about the energy content of nutrients in biochemical pathways?
A
Proteins are primarily used for energy production rather than structural functions.
B
Carbohydrates provide more energy per gram than fats.
C
Vitamins are a significant source of energy in biochemical pathways.
D
Fats provide more energy per gram than carbohydrates.
Verified step by step guidance1
Understand the role of macronutrients: Proteins, carbohydrates, and fats are the primary macronutrients involved in energy production. Each has a specific role and energy content.
Evaluate the energy content of proteins: Proteins are primarily used for structural functions and as enzymes, not mainly for energy. They provide about 4 kcal/g when used for energy.
Assess the energy content of carbohydrates: Carbohydrates are a quick source of energy, providing about 4 kcal/g. They are often used for immediate energy needs.
Analyze the energy content of fats: Fats are a dense energy source, providing about 9 kcal/g, which is more than double the energy provided by carbohydrates or proteins.
Consider the role of vitamins: Vitamins are essential for various biochemical functions but do not provide energy. They act as coenzymes and are crucial for metabolic pathways.
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