![]() (credit: modification of work by Centers for Disease Control and Prevention) albicans has a morphology similar to that of coccus bacteria however, yeast is a eukaryotic organism (note the nuclei) and is much larger. It is the causative agent of vaginal yeast infections as well as oral thrush, a yeast infection of the mouth that commonly afflicts infants. Algae are also being developed as a possible source for biofuels.įigure 1.17 Candida albicans is a unicellular fungus, or yeast. Agar, a gel derived from algae, can be mixed with various nutrients and used to grow microorganisms in a Petri dish. A derivative of algae also plays a prominent role in the microbiology laboratory. Many consumer products contain ingredients derived from algae, such as carrageenan or alginic acid, which are found in some brands of ice cream, salad dressing, beverages, lipstick, and toothpaste. Because other organisms can use the waste products of all algae for energy, algae are important parts of many ecosystems. Cyanobacteria, a type of bacteria, is also considered an algae, but these organisms are bacterial prokaryotes and therefore have a peptidoglycan-based cell wall, unlike the cellulose-based cell wall of the algal protists. Algae are photosynthetic organisms that extract energy from the sun and release oxygen and carbohydrates into their environment. Algal protists are surrounded by cell walls made of cellulose, a type of carbohydrate. Some algae are protists and others are bacteria all protozoa are examples of protists.Īlgae (singular: alga) are mostly made up of protists that can be either unicellular or multicellular and vary widely in size, appearance, and habitat ( Figure 1.15). Protist s are an informal grouping of eukaryotes that are not plants, animals, or fungi. The major defining characteristic of eukaryotes is that their cells contain a nucleus. The domain Eukarya contains all eukaryotes, including uni- or multicellular eukaryotes such as protists, fungi, plants, and animals.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |