Surface of Golgi cisternae towards nucleus is ……………face and towards plasma membrane is ……………face.

Options

A. trans, cis
B. maturing, forming
C. maturing, trans
D. cis, maturing

Answer

To answer the question regarding the surfaces of Golgi cisternae, we can break down the information step by step.

### Step-by-Step Solution:

1. **Understanding Golgi Apparatus Structure**: The Golgi apparatus consists of a series of flattened membrane-bound sacs called cisternae. It plays a crucial role in modifying, sorting, and packaging proteins and lipids for secretion or delivery to other organelles.

2. **Identifying the Orientation**: The Golgi apparatus has a specific orientation with respect to the nucleus and the plasma membrane. The side of the Golgi apparatus that is closest to the nucleus is referred to as the "cis" face, while the side that is oriented towards the plasma membrane is referred to as the "trans" face.

3. **Defining the Cis Face**: The cis face is the receiving side of the Golgi apparatus. It is where vesicles from the endoplasmic reticulum (ER) fuse with the Golgi to deliver proteins and lipids. This face is also known as the forming phase because it is where the processing of materials begins.

4. **Defining the Trans Face**: The trans face is the shipping side of the Golgi apparatus. It is where processed materials are packaged into vesicles for transport to their final destinations, such as the plasma membrane or other organelles. This face is also referred to as the maturing phase.

5. **Final Answer**: Therefore, the surface of Golgi cisternae towards the nucleus is the **cis face**, and towards the plasma membrane is the **trans face**.

### Answer:
The surface of Golgi cisternae towards the nucleus is **cis face** and towards the plasma membrane is **trans face**.