Which macronutrient's daily intake is commonly expressed in grams and is crucial for growth and tissue repair?

• A. Protein
• B. Carbohydrates
• C. Fats
• D. Fiber

Answer: (A)

Protein is the macronutrient whose daily intake is commonly expressed in grams and is essential for growth and tissue repair. The amino acids it provides are the building blocks for muscles, skin, organs, enzymes, and immune components, making adequate protein crucial for healing wounds, supporting growth, and maintaining body tissues. While carbohydrates and fats are also measured in grams and supply energy, they are not the primary nutrients for building and repairing tissues. Fiber is a type of carbohydrate focused on digestive health and does not directly drive tissue synthesis. So, protein best fits the description of a macronutrient whose intake is tracked in grams and is central to growth and repair.