Metabolic reactions in our body are carried out by:

proteins

The correct answer is Option (1) -proteins

Metabolic reactions in our body are primarily carried out by: Proteins

Proteins serve as enzymes, which are biological catalysts that facilitate and regulate metabolic reactions in the body. Enzymes catalyze various biochemical reactions, including the breakdown of carbohydrates, lipids, and proteins for energy, the synthesis of essential molecules, and the detoxification of harmful substances. While carbohydrates, lipids, and salts are important components of metabolic processes and play various roles in cellular function, proteins, particularly enzymes, are the primary molecules responsible for catalyzing metabolic reactions.