Chlamydomonas
Chlamydomonas is a unicellular green alga belonging to the Chlorophyta type. Chlamydomonas reproduces both asexually (by cell division) and sexually (by forming gametes). It inhabits freshwater environments such as ponds, lakes, and temporary water bodies, where it plays an important role in ecosystems through photosynthesis and food chains.
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01
Up to 1000 molecules
It can absorb up to 1000 molecules of CO2 per hour.
02
50 days
In unfavorable conditions, its lifespan can reach up to 50 days.
03
Up to 12 microns
Its two flagella are up to 12 microns long.
04
Of +5 to +40°C.
It can survive in a temperature range of +5 to +40°C.
05
Every 16 hours
The population of chlamydomonas can double every 16 hours.
Structure and functions of microorganisms
Nucleus
Contains the genetic material of algae, which plays a central role in the regulation of cellular processes, including cell division and metabolism. This material is necessary for the correct functioning of the cell and its adaptation to changes in the external environment.
Eye Spot (Stigma)
A photosensitive organelle that allows Chlamydomonas to determine the direction and intensity of light, thereby facilitating phototaxis, or movement towards light.
Flagella
Located at the front end of the body, it has two flagella which enable active movement. These structures can beat selectively to change the direction of movement in response to light signals.
Contractile Vacuoles
(Pulsating) vacuoles of the cell remove excess water constantly entering the cell, thus maintaining osmotic pressure at a level necessary for life.
Cell Wall
Provides mechanical support and protection. It is made of cellulose and other polysaccharides.
Pyrenoids
Located at the bottom of the chloroplasts, they contain a reserve of nutrients. Enzymes involved in the synthesis of sugars are found here. Starch is stored around the pyrenoid. Chlamydomonas is an autotrophic heterotroph in terms of nutrition.
Lysosomes
Digestive vacuoles are membrane-bound vesicles with enzymes that break down harmful and nutrient substances, capable of autolysis (self-digestion).
Vacuole
A single-membrane organelle. The membrane is called the tonoplast. Its function is to accumulate ions and maintain turgor pressure. The vacuole serves as a water reservoir. Present only in unicellular animals.
Centrioles
Cylindrical cellular structures formed from microtubules. They provide stabilization of microtubules and support cellular shape. They assist in the formation of the mitotic spindle for chromosome distribution. Centrioles participate in cell movement and fluid circulation. They can transform into basal bodies for sensory cilia.
