Centrioles are found as single structures in cilia and flagella in animal cells and some lower plant cells. Centrioles are absent from the cells of higher plants but normal mitosis takes place and with satisfactory results.

Centrioles are paired barrel-shaped organelles located in the cytoplasm of animal cells near the nuclear envelope. Centrioles play a role in organizing microtubules that serve as the cell’s skeletal system. They help determine the locations of the nucleus and other organelles within the cell.

Nucleus. The nucleus serves as the cell’s command center, sending directions to the cell to grow, mature, divide, or die. It also houses DNA (deoxyribonucleic acid), the cell’s hereditary material.

Known as the cell’s “command center,” the nucleus is a large organelle that stores the cell’s DNA (deoxyribonucleic acid). The nucleus controls all of the cell’s activities, such as growth and metabolism, using the DNA’s genetic information.

They are called the ‘digestive bags’ because they have enzymes that play a major role in cellular digestion. It will mix with a food vacuole and the enzymes in the lysosome help in digesting the food materials in the food vacuole.

Lysosomes are called digestive bags and also the suicide bags of the cell. They act like the stomach of the cell. They digest the cell debris, engulfed viruses and bacteria so they are called digestive bags but sometimes they digest the whole cell so they are called suicide bags.

Golgi body is the site of protein packaging and dispatching unit of cell.

Golgi body is the membrane-bound organelle that consists of the flattened sac. It involved in the modification and packaging of proteins, which are synthesized by cells. Golgi bodies are also involved in the transport of lipid molecules across the cell. Golgi bodies also create lysosomes.

Golgi complex

Examples of non-membrane-bound organelles are ribosomes, spliceosome, vault, proteasome, DNA polymerase III holoenzyme, RNA polymerase II holoenzyme, photosystem I, ATP synthase, nucleosome, centriole, microtubule-organizing center, cytoskeleton, flagellum, nucleolus, stress granule, etc.