Yes, they do. They have to fuse with the cell membrane to "dump" their contents.
They are vacuoles and cell membranes.
Yes, amoebas have contractile vacuoles that help regulate their water balance by expelling excess water from the cell. These vacuoles also play a role in excreting waste material from the cell.
In a category titled "membranes, canals, and vacuoles," the cellular organelles that would be included are the endoplasmic reticulum (ER) and the Golgi apparatus for their role in membrane synthesis and transport, as well as vacuoles for their storage and transport functions within the cell.
Vacuoles
They have Cell membranes, contractile vacuoles, cytoplasm, nucleus, Food vacuoles, and pseudopods. They also have ribosomes, mitochondria, vesicles, endoplasmic reticulum, Golgi apparatus, cytoskeleton, lysosomes, and centrioles, but you can't really see them. The cell is like the border, because it doesn't have cell walls. The contractile vacuoles collects water and throw it out of the cell. The cytoplasm is the body. The food vacuoles happen when the pseudopods fuse around food. The food is broken down in the food vacuole. The psuedopods are used to move and feed. They are created when the cytoplasm moves around and the rest follows.
Lysosomes, vacuoles, and other cell organelles are surrounded by a membrane known as the lipid bilayer. This membrane is composed of phospholipids and proteins, providing a barrier that regulates the movement of substances in and out of the organelles. The lipid bilayer helps maintain the internal environment necessary for the organelles to function properly. Additionally, these membranes are involved in cell signaling and communication.
When food vacuoles fuse with lysozymes (type of organelle), the digestive enzymes in the lysozyme digest the food particles. This is how intracellular digestion occurs, the feeding mechanism for many prokaryotes and even some cells in the human body such as macrophages which engulf foreign cells.
The paramecium might have a contractile vacuole, whereas cells like animal and plants just have a normal one.
Contractile vacuoles are formed when a food particle is engulfed. Their size depends on the size of food particle. They are not predefined. Other vacoules are predefined and exist whether the food particles are present in them or not.
These "tiny sacs" are called vacuoles, but there are many other vacuoles that contain things other than starch.
An atlastin is any of a family of proteins whose function is to fuse cell membranes.
vacuoles