Decreasing order concentration of minerals inside cell is

Options

A. Ca -K - Na
B. K - Ca - Na
C. k - Na - Ca
D. Na - K - Ca.

Answer

To determine the decreasing order of concentration of minerals inside a cell, we need to identify the primary minerals and their relative concentrations. Here’s a step-by-step breakdown of the solution:

### Step 1: Identify the Major Intracellular Cations
The primary cations found inside the cell include:
- Potassium (K⁺)
- Sodium (Na⁺)
- Calcium (Ca²⁺)

### Step 2: Determine the Concentration Levels
1. **Potassium (K⁺)**: Potassium is the most abundant intracellular cation. It plays a crucial role in maintaining the cell's membrane potential and is present in higher concentrations inside the cell compared to outside.

2. **Sodium (Na⁺)**: Sodium is present in lower concentrations inside the cell compared to potassium but is still significant. It is more concentrated outside the cell and is involved in various cellular processes, including action potentials in neurons.

3. **Calcium (Ca²⁺)**: Calcium is typically found in very low concentrations inside the cell compared to potassium and sodium. It is involved in signaling pathways and muscle contraction but is kept at low levels intracellularly due to its potent effects.

### Step 3: Arrange in Decreasing Order
Based on the concentrations identified:
1. **Potassium (K⁺)** - Highest concentration
2. **Sodium (Na⁺)** - Moderate concentration
3. **Calcium (Ca²⁺)** - Lowest concentration

### Final Answer
The decreasing order of concentration of minerals inside a cell is:
**Potassium (K⁺) > Sodium (Na⁺) > Calcium (Ca²⁺)**

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