Final Answer:
These organelles are surrounded by a double membrane
A. chloroplast
B. nucleus
C. mitochondrion
Step-by-step explanation:
Organelles surrounded by a double membrane include the chloroplast, nucleus, and mitochondrion. The double membrane structure is a distinctive feature of these organelles, reflecting their complex functions within the cell.
The A.chloroplast, responsible for photosynthesis in plant cells, has a double membrane that surrounds the thylakoid membrane system. This structure is vital for capturing and converting light energy into chemical energy, facilitating the synthesis of glucose.
The B. nucleus, often referred to as the cell's control center, is enclosed by a double membrane called the nuclear envelope. This envelope separates the genetic material (DNA) from the cytoplasm, regulating the flow of molecules in and out of the nucleus and safeguarding the integrity of the genetic material.
The C.mitochondrion, known as the powerhouse of the cell, also possesses a double membrane. The outer membrane acts as a barrier, while the inner membrane, folded into cristae, contains the machinery for cellular respiration, enabling the production of ATP—the cell's energy currency. Understanding the presence of a double membrane is crucial for grasping the structural intricacies and functional significance of these organelles within the cell.