Step-by-step explanation:
Two organelles that contain internal membranes are:
1. Mitochondria: Mitochondria are the organelles responsible for cellular respiration. They produce ATP (adenosine triphosphate) through the process of oxidative phosphorylation. The inner membrane of the mitochondria is highly folded and contains various complexes involved in the electron transport chain. These folds, called cristae, provide a large surface area for the reactions to take place, allowing for more efficient ATP production.
2. Endoplasmic reticulum (ER): The ER is responsible for protein synthesis and lipid metabolism. It has two types, the rough endoplasmic reticulum (RER) and the smooth endoplasmic reticulum (SER). The RER has ribosomes on its surface, which synthesize and transport proteins to other parts of the cell. The SER, on the other hand, is involved in the synthesis of lipids and detoxification of harmful substances. The internal membranes of the ER provide a large surface area for the synthesis of macromolecules, allowing for efficient processing of cellular materials.
The folding of the internal membrane in each organelle is beneficial in carrying out the process because it provides a large surface area for the enzymes involved in the reactions. This increases the efficiency and speed of the reactions, allowing the cell to produce the necessary molecules quickly.
The involvement of the membrane in the cellular processes is essential. The membrane provides a physical barrier that separates the cytoplasm from the extracellular environment, maintaining the integrity of the cell. It also serves as a selective barrier, regulating the movement of molecules in and out of the cell. The membranes of the organelles are also involved in the transport of materials within the cell, facilitating the movement of molecules to where they are needed.