The correct order of chemical composition of living tissues/cells in term of percentage of the total cellular mass is

Options

A. nucleic acids `gt` proteins `gt H_(2)O gt` carbohydrates `gt ` Ions `gt` iipids
B. `H_(2)O gt` proteins `gt` nucleic acids ` gt ` carbohydrates `gt ` lipids `gt ` ions
C. `H_(2)O gt` proteins `gt` carbohydrates ` gt ` nucleic acids `gt` Lipids ` gt ` ions
D. lipids ` gt ` ions `gt ` carbohydrates ` H_(2)O gt` proteins ` gt` nucleic acids

Explanation

To determine the correct order of chemical composition of living tissues or cells in terms of the percentage of total cellular mass, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Major Components of Living Cells**:
- The main components of living cells include water, proteins, nucleic acids, carbohydrates, lipids, and ions.

2. **Determine the Percentage Composition**:
- **Water**: Constitutes about 70-90% of the total cellular mass.
- **Proteins**: Make up approximately 10-15% of the total cellular mass.
- **Nucleic Acids (DNA and RNA)**: Account for about 5-7% of the total cellular mass.
- **Carbohydrates**: Typically represent around 3% of the total cellular mass.
- **Lipids**: Usually comprise about 2% of the total cellular mass.
- **Ions**: Contribute roughly 1% of the total cellular mass.

3. **Arrange the Components in Order of Percentage**:
- Based on the percentages identified, the order from highest to lowest is:
1. Water (70-90%)
2. Proteins (10-15%)
3. Nucleic Acids (5-7%)
4. Carbohydrates (3%)
5. Lipids (2%)
6. Ions (1%)

4. **Select the Correct Option**:
- From the options provided, the correct order that matches our findings is:
- Water, Proteins, Nucleic Acids, Carbohydrates, Lipids, Ions.

### Final Answer:
The correct order of chemical composition of living tissues/cells in terms of percentage of the total cellular mass is:
**Water, Proteins, Nucleic Acids, Carbohydrates, Lipids, Ions.**