Calorific value is in the order :

Options

A. Fats `gt` Protein `gt` Carbohydrates
B. Carbohydrates `gt` Fats `gt` Protein
C. Fats `gt` Carbohydrates `gt` Protein
D. Protein `gt` Fats `gt` Carbohydrates

Answer

To determine the calorific value of different biomolecules, we need to understand how much energy each type of biomolecule provides when combusted. The calorific values of proteins, carbohydrates, and fats are as follows:

1. **Proteins**: Provide approximately 4 calories per gram.
2. **Carbohydrates**: Also provide approximately 4 calories per gram.
3. **Fats**: Provide approximately 9 calories per gram.

Now, let's analyze the calorific values step by step:

### Step 1: Identify the calorific values
- **Proteins**: 4 calories/gram
- **Carbohydrates**: 4 calories/gram
- **Fats**: 9 calories/gram

### Step 2: Compare the calorific values
- Both proteins and carbohydrates provide the same amount of energy (4 calories/gram).
- Fats provide significantly more energy (9 calories/gram) compared to both proteins and carbohydrates.

### Step 3: Establish the order of calorific values
Based on the calorific values identified:
- Fats have the highest calorific value.
- Proteins and carbohydrates have the same calorific value, which is lower than that of fats.

### Conclusion:
The order of calorific value from highest to lowest is:
**Fats > Carbohydrates = Proteins**

Thus, the correct order is:
**Fats > Carbohydrates = Proteins**

### Final Answer:
The calorific value is in the order: **Fats > Carbohydrates = Proteins**.

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