Multiple Choice
Which of the following is a function of proteins in living cells?
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4. Biomolecules
Proteins
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Which type of biomolecule is primarily responsible for forming muscles in the human body?
A
Nucleic acids
B
Proteins
C
Lipids
D
Carbohydrates
Verified step by step guidance1
Understand the role of each biomolecule type: Nucleic acids store and transmit genetic information, lipids are involved in energy storage and cell membranes, carbohydrates provide energy, and proteins are involved in structure and function, including muscle formation.
Recall that muscles are primarily made up of structural and contractile proteins such as actin and myosin, which are essential for muscle contraction and movement.
Recognize that proteins are composed of amino acids linked by peptide bonds, forming complex structures that contribute to muscle tissue.
Eliminate the other options: Nucleic acids (e.g., DNA and RNA) do not form muscles, lipids are not structural components of muscles, and carbohydrates are primarily energy sources, not structural molecules.
Conclude that proteins are the biomolecules primarily responsible for forming muscles in the human body.
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