Difference between glomerular filtrate and plasma is of
(a) Proteins
(b) Potassium
(c) First is white whereas later is yellow
(d) First is yellow whereas later is white

Options

A. Proteins
B. Potassium
C. First is white whereas later is yellow
D. First is yellow whereas latter is white

Answer

To solve the question regarding the difference between glomerular filtrate and plasma, we need to analyze the components of both substances.

### Step-by-Step Solution:

1. **Understanding Blood Plasma**:
- Blood plasma is the liquid component of blood and contains various elements such as:
- Red blood cells
- White blood cells
- Proteins (such as albumin, globulins, and fibrinogen)
- Glucose
- Water
- Waste materials (like urea)
- Inorganic salts (like sodium, potassium, etc.)

2. **Understanding Glomerular Filtrate**:
- Glomerular filtrate is the fluid that is filtered from the blood plasma through the glomeruli in the kidneys. It contains:
- Water
- Glucose
- Electrolytes (like sodium and potassium)
- Nitrogenous wastes (like urea)
- Importantly, glomerular filtrate **does not contain**:
- Blood cells (both red and white)
- Plasma proteins

3. **Identifying the Key Difference**:
- The major difference between glomerular filtrate and plasma is the presence of proteins. Blood plasma contains proteins, while glomerular filtrate does not. This is a crucial distinction as it affects the composition and function of each fluid.

4. **Evaluating the Options**:
- (a) Proteins: This option highlights the absence of proteins in glomerular filtrate compared to plasma, making it the correct choice.
- (b) Potassium: Both plasma and glomerular filtrate contain potassium, so this is not a distinguishing factor.
- (c) First is white whereas later is yellow: This is not accurate; both are typically yellowish.
- (d) First is yellow whereas later is white: This is also not accurate; both are typically yellowish.

5. **Conclusion**:
- The correct answer is (a) Proteins, as it directly addresses the primary difference between glomerular filtrate and plasma.

### Final Answer:
(a) Proteins