The protein content in 100g of cow’s milk –
**Core Concept**
Cow's milk is a rich source of nutrients, including proteins, fats, carbohydrates, and minerals. The protein content in cow's milk is primarily composed of casein and whey proteins, which have various biological functions and nutritional benefits.
**Why the Correct Answer is Right**
The protein content in cow's milk is approximately 3.2-3.5% of its total weight. This is due to the presence of casein (80-85%) and whey proteins (15-20%), which are essential for human nutrition. Casein is a slow-digesting protein that helps in muscle growth and repair, while whey proteins are rapidly absorbed and are important for immune function and muscle recovery.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it is underestimating the protein content in cow's milk.
* **Option B:** This option is incorrect as it is overestimating the protein content in cow's milk.
* **Option D:** This option is incorrect as it is not a commonly accepted value for the protein content in cow's milk.
**Clinical Pearl / High-Yield Fact**
The protein content in cow's milk is an essential factor in determining its nutritional value and is often used as a reference in the formulation of infant formulas and nutritional supplements.
**Correct Answer: C. 3.3%**