Macronutrients & Micronutrients Essentials Flashcards

Which of the following is a macronutrient?

Answer: Carbohydrates

Macronutrients are nutrients that the body needs in large amounts to provide energy and support bodily functions. Carbohydrates, along with proteins and fats, are primary macronutrients. They are essential for energy production, making them a crucial component of a balanced diet, unlike micronutrients like vitamins and minerals which are needed in smaller quantities.

Which vitamin is fat-soluble?

Answer: Vitamin D

Vitamin D is a fat-soluble vitamin, meaning it dissolves in fats and oils and can be stored in the body's fatty tissues and liver. Unlike water-soluble vitamins such as Vitamin C and B vitamins, which are not stored and are excreted in urine, fat-soluble vitamins require dietary fat for absorption. This characteristic affects how they are absorbed, transported, and stored in the body.

Which of the following is a function of protein in the body?

Answer: Builds and repairs tissues

Protein is a fundamental macronutrient vital for numerous bodily functions, most notably building and repairing tissues. It is essential for the growth and maintenance of muscles, organs, skin, and hair, and also plays a role in enzyme and hormone production. Unlike carbohydrates which primarily provide immediate energy, protein's structural and functional roles are paramount for overall health.

Which mineral is crucial for oxygen transport in the blood?

Answer: Iron

Iron is a crucial mineral primarily responsible for oxygen transport in the blood. It is a key component of hemoglobin, a protein in red blood cells that binds to oxygen in the lungs and carries it throughout the body to tissues and organs. Without sufficient iron, the body cannot produce enough healthy red blood cells, leading to conditions like anemia and impaired oxygen delivery.

Which macronutrient provides the most calories per gram?

Answer: Fat

Fat is the macronutrient that provides the most calories per gram, yielding approximately 9 calories per gram. In contrast, carbohydrates and protein each provide about 4 calories per gram. This higher caloric density makes fat an efficient source of energy and an important component for energy storage in the body.

Which vitamin helps in calcium absorption?

Answer: Vitamin D

Vitamin D is essential for calcium absorption in the body. It helps regulate calcium and phosphate levels, promoting their absorption from the gut and ensuring proper bone mineralization. Without adequate Vitamin D, the body cannot effectively absorb calcium, which can lead to weakened bones and other health issues.

Which nutrient is not classified as a micronutrient?

Answer: Fat

Fat is classified as a macronutrient, meaning the body needs it in large amounts for energy, hormone production, and nutrient absorption. Micronutrients, on the other hand, are vitamins and minerals (like Vitamin E, Calcium, and Iron) that the body requires in much smaller quantities. This distinction is based on the quantity needed by the body, not their importance.

Which vitamin is essential for blood clotting?

Answer: Vitamin K

Vitamin K is essential for blood clotting, playing a critical role in the synthesis of several proteins required for coagulation. Without sufficient Vitamin K, the blood's ability to clot is impaired, which can lead to excessive bleeding. This makes it a vital nutrient for wound healing and preventing hemorrhage.

What is a primary function of carbohydrates?

Answer: Provide energy

The primary function of carbohydrates is to provide energy to the body. They are broken down into glucose, which is the body's preferred source of fuel for cells, tissues, and organs, especially the brain. While other nutrients have different roles, carbohydrates are fundamental for immediate and sustained energy production.