Question

lo 2.1. what is the role of blood in transporting nutrients throughout the body?
to regulate body temperature by distributing heat throughout the body.
to transport oxygen to the cells for energy production.
to transport carbon dioxide from the cells to the lungs for exhalation.
to transport nutrients such as glucose, amino acids, and fatty acids to the cells where they are used as a source of energy.
to transport nutrients such as vitamins and minerals throughout the body.

Explanation:

The question asks about the role of blood in transporting nutrients. Let's analyze each option:

• Option 1: Regulating body temperature is a role of blood, but it is not about transporting nutrients.
• Option 2: Transporting oxygen is a function of blood (by red blood cells), but oxygen is not a nutrient in the context of macronutrients like glucose, amino - acids, etc.
• Option 3: Transporting carbon dioxide is a waste - removal function, not a nutrient - transport function.
• Option 4: Glucose (carbohydrate), amino acids (protein - derived), and fatty acids (lipid - derived) are major nutrients. Blood transports these to cells for energy production (e.g., glucose is used in cellular respiration).
• Option 5: While blood does transport vitamins and minerals (micronutrients), option 4 is more comprehensive as it includes macronutrients which are the main source of energy.

Answer:

To transport nutrients such as glucose, amino acids, and fatty acids to the cells where they are used as a source of energy.