They are the site where photosynthesis occurs. Chloroplasts are found in plant cells and other organisms that conduct photosynthesis (such as algae).Here are just a few of the specialised organelles that we know about: Some cell types have their own specialised organelles that carry out functions that aren’t required by all cells. That’s why very active muscle cells are often full of mitochondria. For instance, cells that use a lot of energy tend to contain large numbers of mitochondria (the organelle responsible for harvesting energy from food).

The primary cilium (which has recently been shown to help cells sense their surroundings) may also be a core organelle because it seems to be present on most cells.ĭifferent types of cells have different amounts of some organelles. Core organelles include the nucleus, mitochondria, endoplasmic reticulum and several others.

They carry out essential functions that are necessary for the survival of cells – harvesting energy, making new proteins, getting rid of waste and so on. Core organellesĬore organelles are found in virtually all eukaryotic cells. Despite their central importance to cell function (and therefore to all life), organelles have only been studied closely following the invention of the transmission electron microscope, which allowed them to be seen in detail for the first time.

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