: organelles
Organelles are small structures within cells that perform specific functions. The nucleus, for example, contains a cell's chromosomes, while mitochondria are the site of cellular respiration.
Video:
Image
controls
Elodea leaf cells with structures labeled
Chloroplasts and mitochondria move within Elodea leaf cells; nuclei are also visible as clear, fried-egg-shaped structures. Elodea are common freshwater aquarium plants.
An elodea leaf was mounted in pondwater between a slide and coverslip with a silicon spacer. Images were taken on an inverted compound microscope using a 40x DIC objective and digital camera.
Elodea leaf cells with structures labeled
Spirogyra, structures labeled
Sea urchin embryo cell division, organelles labeled
Crawling Amoeba, organelles labeled