The axoplasm inside the axon contains high concentration of .......and ............:-

Options

A. `K^(+) and Na^(+)`
B. `K^(+)` and Negatively charged proteins
C. `Na^(+) and Cl^(-)`
D. Both A and C

Answer

To answer the question regarding the axoplasm inside the axon and its high concentration of certain substances, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Axoplasm**: Axoplasm is the cytoplasm found within the axon of a neuron. It is crucial for the function of the neuron, particularly in transmitting electrical signals.

2. **Resting Potential of Neurons**: When a neuron is at resting potential, there is a specific distribution of ions across the neuronal membrane. This is essential for the generation of action potentials.

3. **Ion Concentration Inside the Axon**: At resting potential, the axoplasm has a higher concentration of potassium ions (K⁺) compared to sodium ions (Na⁺). This is due to the selective permeability of the neuronal membrane, which allows potassium ions to move more freely than sodium ions.

4. **Negatively Charged Proteins**: In addition to potassium ions, the axoplasm also contains a high concentration of negatively charged proteins. These proteins contribute to the overall negative charge inside the neuron relative to the outside environment.

5. **Conclusion**: Therefore, the axoplasm inside the axon contains a high concentration of potassium ions (K⁺) and negatively charged proteins.

### Final Answer:
The axoplasm inside the axon contains high concentrations of **potassium ions (K⁺)** and **negatively charged proteins**.

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