What happens to the glucose present in the filtrate when it reaches the proximal convoluted tubules?

Explanation

### Step-by-Step Solution:

1. **Understanding the Nephron Structure**:
- The nephron is the functional and structural unit of the kidney, with each kidney containing about 1 million nephrons.
- The nephron consists of several parts: the glomerulus, Bowman’s capsule, proximal convoluted tubule (PCT), loop of Henle, distal convoluted tubule (DCT), and collecting duct.

2. **Filtrate Composition**:
- The filtrate that enters the proximal convoluted tubule contains various substances, including essential nutrients and electrolytes. One of the key nutrients present is glucose.
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