Multiple Choice
Which of the following nutrients serves as a major source of energy for the human body?
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4. Biomolecules
Carbohydrates
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Which biomolecules serve as the main sources of energy for cells?
A
Carbohydrates
B
Nucleic acids
C
Steroids
D
Phospholipids
Verified step by step guidance1
Understand the role of biomolecules in cellular energy: Biomolecules are essential for various cellular functions, including energy storage and transfer. Identify which types of biomolecules are directly involved in providing energy to cells.
Focus on carbohydrates: Carbohydrates are the primary source of energy for cells. They are broken down into glucose during digestion, which is then used in cellular respiration to produce ATP (adenosine triphosphate), the energy currency of the cell.
Evaluate nucleic acids: Nucleic acids, such as DNA and RNA, are not directly involved in energy production. Their primary function is to store and transmit genetic information, not to serve as energy sources.
Consider steroids: Steroids are a type of lipid that primarily function as signaling molecules (e.g., hormones) and structural components of cell membranes. They do not serve as a main source of energy for cells.
Analyze phospholipids: Phospholipids are another type of lipid that primarily make up the cell membrane structure. While lipids can be used for energy storage, phospholipids themselves are not the main source of energy for cells.
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