Which of the following is a micronutrient?
Minerals
Understanding Macronutrients and Micronutrients
Our bodies need different types of nutrients to function properly. These nutrients are generally categorized into two main groups: macronutrients and micronutrients. The key difference lies in the quantities required by the body.
Distinguishing Macronutrients and Micronutrients
Let's break down the difference:
- Macronutrients: These are nutrients needed in large quantities by the body. They primarily provide energy and building blocks for the body. Examples include carbohydrates, proteins, and fats.
- Micronutrients: These are nutrients needed in much smaller quantities compared to macronutrients. Although required in tiny amounts, they are essential for numerous bodily functions, including metabolism, growth, and maintenance. Vitamins and minerals fall under this category.
Analyzing the Given Options
Let's look at the options provided and classify them based on whether they are macronutrients or micronutrients:
| Option | Nutrient Type | Explanation |
|---|---|---|
| Fat | Macronutrient | Provides significant energy and is essential for various functions like hormone production and nutrient absorption. |
| Carbohydrate | Macronutrient | The body's primary source of energy. |
| Minerals | Micronutrient | Inorganic substances needed in small amounts for bone health, nerve function, fluid balance, and many other processes. |
| Protein | Macronutrient | Crucial for building and repairing tissues, making enzymes and hormones, and can also provide energy. |
Based on this analysis, Minerals are classified as micronutrients because they are required by the body in small amounts for essential functions.
Conclusion
Therefore, among the given options, Minerals are the correct example of a micronutrient.
Revision Table: Key Nutrients Classification
| Nutrient Category | Examples | Requirement Quantity | Primary Role Examples |
|---|---|---|---|
| Macronutrients | Carbohydrates, Proteins, Fats | Large quantities (grams) | Energy, Structure, Building & Repair |
| Micronutrients | Vitamins, Minerals | Small quantities (milligrams or micrograms) | Metabolism, Enzyme function, Cellular processes |
Additional Information: Importance of Minerals
Minerals are inorganic elements that originate from the earth and are absorbed by plants. Humans obtain minerals by eating plants or animals that have consumed plants. Minerals play diverse and critical roles:
- Structural Roles: Calcium and phosphorus are vital components of bones and teeth.
- Regulatory Roles: Sodium, potassium, and chloride are electrolytes important for fluid balance and nerve signals. Iron is essential for oxygen transport in blood. Zinc is involved in immune function and wound healing.
- Component of Enzymes/Hormones: Many minerals act as cofactors for enzymes or are part of hormone structures.
Since the body cannot produce most minerals, they must be obtained through diet. Deficiencies in specific minerals can lead to various health problems.
Important Questions from Biomolecules
The chemical name of Vitamin D 3is:
Which of the following food comes under complex carbohydrate?
I. Potatoes
II. Sweets
III. Pasta
IV. Wheat
Following are the pKa's of the ionizable groups in lysine
pKa 1 = 2.16 (α - carboxylic group)
pKa 2 = 9.06 (α - amino group)
pKa 3 = 10.54 (ε - amino group)
Which one of the following options represents the pl of lysine?
How many hydrogen bonds involving the backbone CO and NH can be observed in an α‐helix consisting of 15 amino acid residues?
In eukaryotic cells, covalently attached lipids help to anchor some water soluble proteins to the plasma membrane. One group of cytosolic proteins are anchored to the cytosolic face of membrane by a fatty acyl group (e.g. myristate or palmitate). These groups are generally covalently attached to which amino acids present at the N‐terminus of the polypeptide chain?
