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Specimen
029
A short video showing Chlamydomonas reinhartii from sea water samples we collected during a weekend trip to Felixstowe Ferry in Suffolk. These are single-cell green algae about 10 micrometres in diameter that swims with two flagella. It has a cell wall made of hydroxyproline-rich glycoproteins, a large cup-shaped chloroplast, a large pyrenoid (a carbon-concentrating mechanism), and an eyespot that senses light. C. Reinhardtii swims thanks to its two flagella, in a movement analogous to human breaststroke, and repeating this movement of the flagella 50 times per second. |