Dialysis can separate

Options

A. Glucose and fructose
B. Glucose and sucrose
C. Glucose and NaCl
D. glucose and proteins

Answer

To answer the question "Dialysis can separate," we need to understand the process of dialysis and what substances it can effectively separate.

### Step-by-Step Solution:

1. **Understanding Dialysis**:
- Dialysis is a medical procedure that filters and purifies blood. It is often used for patients with kidney failure, where the kidneys can no longer filter waste products from the blood effectively.

2. **Mechanism of Dialysis**:
- The process involves a semipermeable membrane that allows certain small molecules and ions to pass through while blocking larger molecules. This selective permeability is crucial for the separation process.

3. **Substances Involved**:
- In the context of the question, we are considering various substances: glucose, fructose, sucrose, sodium chloride (NaCl), and proteins.

4. **Analyzing the Options**:
- **Glucose and Fructose**: Both are small molecules and can be separated by dialysis.
- **Glucose and Sucrose**: Sucrose is a larger molecule compared to glucose and may not be effectively separated by dialysis.
- **Glucose and NaCl**: Both glucose and NaCl are small enough to pass through the dialysis membrane, so they can be separated.
- **Glucose and Proteins**: Proteins are large molecules and cannot pass through the dialysis membrane, allowing for effective separation.

5. **Conclusion**:
- Based on the analysis, dialysis can effectively separate glucose from proteins, as well as glucose from fructose and glucose from NaCl. However, it cannot separate glucose from sucrose effectively.

### Final Answer:
Dialysis can separate glucose and proteins, glucose and fructose, and glucose and NaCl.