Where are glycoproteins present in plasma membrane?

Explanation

**Step-by-Step Solution:**

1. **Understanding Glycoproteins**: Glycoproteins are molecules that consist of carbohydrates attached to proteins. They play important roles in various biological processes, including cell recognition and signaling.

2. **Location in Plasma Membrane**: Glycoproteins are primarily located on the extracellular surface of the plasma membrane. This means they are found on the outside part of the cell membrane, facing the external environment.

3. **Attachment to Proteins**: In the plasma membrane, glycoproteins can be formed when carbohydrate chains attach to either intrinsic (integral) proteins or peripheral (extrinsic) proteins.

...