What are the building blocks of cells and tissues, crucial for metabolism?

What are the building blocks of cells and tissues, crucial for metabolism?

• A. Carbohydrates
• B. Proteins
• C. Fats
• D. Nucleic Acids

Answer: (B)

Proteins are indeed the building blocks of cells and tissues, playing a vital role in metabolism. They are composed of amino acids linked together by peptide bonds, and these biomolecules perform a wide array of functions essential for life. Proteins are instrumental in forming cellular structures, acting as enzymes to facilitate biochemical reactions, serving as hormones to regulate physiological processes, and playing crucial roles in immune responses and transport of molecules across cell membranes. In the context of metabolism, enzymes—which are proteins—catalyze virtually all biochemical reactions within cells, including those involved in energy production and macromolecule synthesis. The specificity of enzyme action and their regulation is fundamental to metabolic pathways, affecting how cells respond to their environment and manage resources for growth, repair, and energy production. While carbohydrates, fats, and nucleic acids are also important biomolecules, they do not serve as the primary structural and functional units of cells in the same manner that proteins do. Carbohydrates primarily provide energy and serve as energy storage and structural components in certain organisms. Fats act as energy storage molecules and are integral to cell membranes but do not participate in metabolic processes as directly and diversely as proteins do. Nucleic acids, such as DNA and RNA, are essential for genetic

Proteins are indeed the building blocks of cells and tissues, playing a vital role in metabolism. They are composed of amino acids linked together by peptide bonds, and these biomolecules perform a wide array of functions essential for life. Proteins are instrumental in forming cellular structures, acting as enzymes to facilitate biochemical reactions, serving as hormones to regulate physiological processes, and playing crucial roles in immune responses and transport of molecules across cell membranes.

In the context of metabolism, enzymes—which are proteins—catalyze virtually all biochemical reactions within cells, including those involved in energy production and macromolecule synthesis. The specificity of enzyme action and their regulation is fundamental to metabolic pathways, affecting how cells respond to their environment and manage resources for growth, repair, and energy production.

While carbohydrates, fats, and nucleic acids are also important biomolecules, they do not serve as the primary structural and functional units of cells in the same manner that proteins do. Carbohydrates primarily provide energy and serve as energy storage and structural components in certain organisms. Fats act as energy storage molecules and are integral to cell membranes but do not participate in metabolic processes as directly and diversely as proteins do. Nucleic acids, such as DNA and RNA, are essential for genetic