Question

Given below are two statements:
Statement I: Concentrically arranged cisternae of Golgi complex are arranged near the nucleus with distinct convex cis or maturing and concave trans or forming face.
Statement II: A number of proteins are modified in the cisternae of Golgi complex before they are released from cis face.
In the light of the above statements, choose the correct answer from the option given below.

• A. Statement I is true but Statement II is false.
• B. Statement I is false but Statement II is true
• C. Both Statement I and Statement II are true
• D. Both Statement I and Statement II are false

Answer 1

The Correct Option is D

To evaluate the given statements, we must understand the structure and function of the Golgi complex:

• The Golgi complex is an organelle involved in the modification, sorting, and packaging of proteins and lipids. It is composed of stacked membrane-bound structures known as cisternae.
• The Golgi complex has a distinct orientation with a cis face (also known as the forming face) oriented towards the endoplasmic reticulum and a trans face (or maturing face) oriented towards the plasma membrane.

Let's evaluate each statement:

• Statement I: "Concentrically arranged cisternae of Golgi complex are arranged near the nucleus with distinct convex cis or maturing and concave trans or forming face."
  This statement contains a factual error. While it is correct that the cisternae are concentrically arranged and located near the nucleus, the description of the cis and trans faces is incorrect. The cis face is known as the forming face, and it is generally convex, facing the endoplasmic reticulum, whereas the trans face is the maturing face, generally concave, facing the plasma membrane or away from the nucleus.
• Statement II: "A number of proteins are modified in the cisternae of Golgi complex before they are released from cis face."
  This statement is incorrect. While proteins do undergo modification within the cisternae of the Golgi complex, they are released from the trans face, not the cis face. The trans face is where the Golgi packages and sends the modified proteins to their destinations.

Based on the explanations above, both statements contain inaccuracies regarding the structure and functioning of the Golgi complex. Therefore, the correct answer is:

Both Statement I and Statement II are false