unlike bacteria, the cell membranes of eukaryotes contain a nucleus.
unlike bacteria, the cell membranes of eukaryotes contain a nucleus.
unlike bacteria the cell membranes of eukaryotes contain?
a nucleus
section::::classification and structure.:eukaryotes.









































most living things that are visible to the naked eye in their adult form are eukaryotes, including humans. however, a large number of eukaryotes are also microorganisms. unlike bacteria and archaea, eukaryotes contain organelles such as the cell nucleus, the golgi apparatus and mitochondria in their cells. the nucleus is an organelle that houses the dna that makes up a cell's genome. dna (deoxyribonucleic acid) itself is arranged in complex chromosomes.
microorganism
archaea and bacteria are generally similar in size and shape, although a few archaea have very strange shapes, such as the flat and square-shaped cells of "haloquadratum walsbyi". despite this morphological similarity to bacteria, archaea possess genes and several metabolic pathways that are more closely related to those of eukaryotes, notably the enzymes involved in transcription and translation. other aspects of archaeal biochemistry are unique, such as their reliance on ether lipids in their cell membranes, such as archaeols. archaea use more energy sources than eukaryotes: these range from organic compounds, such as sugars, to ammonia, metal ions or even hydrogen gas. salt-tolerant archaea (the haloarchaea) use sunlight as an energy source, and other species of archaea fix carbon; however, unlike plants and cyanobacteria, no known species of archaea does both. archaea reproduce asexually by binary fission, fragmentation, or budding; unlike bacteria and eukaryotes, no known species forms spores. unlike viruses and bacteria, no known archaea is a pathogen.
marine microorganism