WebMutations in the DNA can change the protein it codes for, or they might have no effect. To understand this, we need to review the genetic code. The genetic code informs the cell what sequence... WebArchaea and Bacteria generally have a single circular chromosome– a piece of circular, double-stranded DNA located in an area of the cell called the nucleoid. In contrast, many eukaryotes have multiple, linear chromosomes. Archaea and Bacteria reproduce through fission, a process where an individual cell reproduces its single chromosome and ...
13.3 Protists - Concepts of Biology OpenStax
Many protists are flagellate, for example, and filter feeding can take place where flagellates find prey. Other protists can engulf bacteria and other food particles, by extending their cell membrane around them to form a food vacuole and digesting them internally in a process termed phagocytosis. See more A protist is any eukaryotic organism (that is, an organism whose cells contain a cell nucleus) that is not an animal, plant, or fungus. While it is likely that protists share a common ancestor (the last eukaryotic common ancestor), … See more Besides their relatively simple levels of organization, protists do not necessarily have much in common. When used, the term "protists" is now considered to mean a paraphyletic assemblage of similar-appearing but diverse taxa (biological groups); these taxa … See more Historical classifications Among the pioneers in the study of the protists, which were almost ignored by Linnaeus except for some genera (e.g., Vorticella, Chaos, Volvox, Corallina, Conferva, Ulva, Chara, Fucus), were Leeuwenhoek See more Some protists reproduce sexually using gametes, while others reproduce asexually by binary fission. Some species, for example Plasmodium falciparum, … See more The classification of a third kingdom separate from animals and plants was first proposed by John Hogg in 1860 as the kingdom Protoctista; in 1866 Ernst Haeckel also proposed a … See more The term Protista was first used by Ernst Haeckel in 1866. Protists were traditionally subdivided into several groups based on similarities to the … See more Nutrition can vary according to the type of protist. Most eukaryotic algae are autotrophic, but the pigments were lost in some groups. Other protists are heterotrophic, and may present phagotrophy, osmotrophy, saprotrophy or parasitism. … See more WebFeb 15, 2024 · protist, any member of a group of diverse eukaryotic, predominantly unicellular microscopic organisms. They may share … images related to organic farming
15.3: Virulence Factors - Biology LibreTexts
WebAnswer & Explanation. All tutors are evaluated by Course Hero as an expert in their subject area. answer: Mutation can occur in any type of cell and it is a change that occurs in DNA sequence. in above all organisms, bacteria, fungi,animals,protists, plants and archaea all contains DNA. therefore in all of them mutation can occur. WebProtists are unicellular eukaryotic organisms: their cell nuclei are enclosed in membranes. They live in water (or watery tissues within the body, in the case of some diseases) and are classified in their own kingdom. WebJun 16, 2024 · Protist (biology definition): Any of a group of eukaryotic organisms belonging to the Kingdom Protista. Protists include: (1) protozoa, the animal-like protists, (2) algae, the plant-like protists, and (3) slime molds and water molds, the fungus-like protists. Etymology: from Greek “protiston” + (“-a”), meaning the (most) first of all ones. images related to security