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Cellular membrane, nucleus, and cytoplasm are the three major components of a cell. Organelles are structures present within a cell and are specialized to perform a particular metabolic task essential for the survival of the cell. Eukaryotic cells consist of several organelles, including Golgi complex, mitochondria, endoplasmic reticulum, flagella and cilia, chloroplast, microfilaments and microtubules, and lysosomes. Similar to a nucleus, mitochondria are also surrounded by a double membrane system. Some microbial eukaryotes get killed by the presence of oxygen (O2). Such microbes do not contain mitochondria and some may possess structures referred to as hydrogenosomes.
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Modified Mastering Microbiology with Pearson eText -- Standalone Access Card -- for Brock Biology of Microorganisms (15th Edition)
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