Quiz 15: Nutrition From Infancy Through Adolescence


The body requires both, macro- as well as micro-nutrients, for the growth. Energy provided by the macronutrients and role played by the micronutrients in cellular growth contributes to the overall growth of the body. Calories is the amount of energy required by the body and consumed through food. It is provided by the macronutrients, namely, carbohydrates, fats, and proteins in the food. Iron and zinc play critical roles in cellular metabolism. Iron is a micronutrient which is essential to produce hemoglobin in the red blood cells of the body. Zinc acts as a catalyst in several cellular processes and as a structural cofactor in several pathways. Calories, iron, and zinc are equally important in the complete growth of the human body. Hence, the options a, b, and c would be incorrect. Provision of energy, availability of hemoglobin, and cellular processes and pathways are all part of the overall growth process. The respective factors contributing to these, namely, calories, iron, and zinc are together essential for the growth and development of the body. Hence, the option img would be the correct option.

Catch-up growth is the term that refers to the rapid growth phase following a period of inhibited growth that lags behind the normal growth tracked on a length-to-age percentile chart. The catch-up growth usually continues till the time the child reaches his or her genetic pace of growth. Children with low birth weight (LBW) and those born as preterm infants usually lag in growth when tracked alongside the normal growth charts, during their initial years. They tend to catch-up within 2 or 3 years. However, if these infants are continually fed nutrient-deficient diets, it can affect their growth and height. Growth failure (less than normal body weight and head circumference) and short stature (less than normal height) are primary limitations to catch-up growth when a nutrient-deficient diet has been consumed throughout childhood.


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