Alveolata
Alveolata
Alveolata (pronunciation: al-vee-oh-lah-tuh) is a group of protist organisms, which are characterized by the presence of cortical alveoli, small vesicles that are located just beneath the cell membrane. The term "Alveolata" is derived from the Latin word "alveolus" meaning small cavity, referring to these vesicles.
Etymology
The term "Alveolata" comes from the Latin word "alveolus", which means small cavity. This refers to the characteristic alveoli, or small vesicles, found beneath the cell membrane of these organisms.
Classification
Alveolata is a major group within the eukaryotic domain. It is further divided into three main subgroups:
- Ciliophora: These are generally large-sized protists that move using cilia. They are characterized by having two types of nuclei: a macronucleus and one or more micronuclei.
- Dinoflagellata: These are mostly marine protists, some of which are photosynthetic. They are known for their two flagella, which cause a spinning motion.
- Apicomplexa: These are parasitic protists, many of which cause serious diseases in humans and other animals, such as malaria.
Related Terms
- Protist: A diverse group of eukaryotic microorganisms.
- Eukaryote: An organism whose cells contain a nucleus and other organelles enclosed within membranes.
- Ciliate: A type of protist within the group Alveolata, characterized by the presence of hair-like organelles called cilia.
- Dinoflagellate: A type of protist within the group Alveolata, known for their two flagella and often photosynthetic capabilities.
- Apicomplexan: A type of protist within the group Alveolata, many of which are parasitic and cause diseases such as malaria.
External links
- Medical encyclopedia article on Alveolata
- Wikipedia's article - Alveolata
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