Prokaryotes

Prokaryotes (from Old Greek pro- before + karyon nut or kernel, referring to the cell nucleus, + suffix -otos, pl. -otes; also spelled "procaryotes") are organisms without a cell nucleus (= karyon), or indeed any other membrane-bound organelles, ...
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Prokaryotes are unicellular (in rare cases, multicellular) organisms without a nucleus. The name prokaryote comes from the Greek pros meaning before and karyon meaning nut, referring to the nucleus.
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Prokaryotes
Much of our understanding of gene control comes from studies of prokaryotes.
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Prokaryotes are much simpler in their organization than are eukaryotes. There are a great many more organelles in eukaryotes, also more chromosomes. The usual method of prokaryote cell division is binary fission.
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Prokaryotes include the kingdoms of Monera (simple bacteria) and Archaea.
They are characterized by:
the lack of a nucleus;
the possession of a single double-stranded DNA molucule
the possession of a very small range of organelles ...
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prokaryotes: cells that do not contain a nucleus or internal organelles; include bacteria, cyanobacteria, and archaebacteria.
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prokaryotes
an organism that is either a bacterium or a blue-green alga, its main characteristic being prokaryotic cells lacking a membrane-bound nucleus and no mitosis or meiosis.
Covered in Lab 3 Cells and Cell Biology ...
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In prokaryotes, a cell that has been ge-netically altered through the uptake of foreign DNA. In higher eukaryotes, a cultured cell that has acquired a malignant phenotype.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
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In prokaryotes (bacteria and other simple organisms) as well as the more complex eukaryotes, ribosomes help translate gene-encoded information into a specific protein. Ribosomes consist of two unequally sized subunits containing RNA and proteins.
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Some prokaryotes are essential to the nitrogen cycle because of their role in nitrogen fixation, the conversion of nitrogen gas to ammonium ions. These ions can then be used to build amino acids.
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ocytes A group of prokaryotes currently classified among the Archaebacteria but possibly a sister group of eukaryotes.
eosinophil White blood cells characterized by the presence of cytoplasmic granules that become stained by an acid dye.
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A DNA-binding protein in prokaryotes that blocks gene transcription by binding to the operator. Restriction endonuclease (enzyme).
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Codes for the first amino acid in all polypeptide sequences, which is N-formyl-methionine in prokaryotes and methionine in eukaryotes.
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This concludes what I'm going to discuss about prokaryotes. Several conclusions seem to emerge from these studies. First, given exponential growth and large population sizes, lots of mutations seem to occur in bacterial populations.
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The cytoplasmic membrane of prokaryotes is fundamentally similar to that of a eukaryotic cell. The variety of proteins in the cytoplasmic membrane in prokaryotes is greater because of the significantly greater number of functions performed by it.
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The three-domain system is a biological classification introduced by Carl Woese in 1990 that emphasizes his separation of prokaryotes into two groups, originally called Eubacteria and Archaebacteria.
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Hair-like structure attached to a cell, used for locomotion in many protists and prokaryotes.
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Although prokaryotes share some common features because of the lack of membrane bound organelles (e.g., coupled transcription and translation are possible in prokaryotes but not in eukaryotes), ...
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In prokaryotes the transfer is a one-way process. The union of two bacterial cells, during which chromosomal material is transferred from the donor to the recipient cell.
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The type of cell division by which prokaryotes reproduce; each dividing daughter cell receives a copy of the single parental chromosome.
binomial
[L. bi, twice, two + Gk. nomos, usage, law] ...
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In prokaryotes, chromosomal DNA is circular, and the entire genome is carried on one chromosome. Eukaryotic genomes consist of a number of chromosomes whose DNA is associated with different kinds of proteins.
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A linear end-to-end arrangement of genes and other DNA, sometimes with associated protein and RNA. The form of the genetic material in viruses and cells. A circle of DNA in prokaryotes; a DNA or an RNA molecule in viruses; ...
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-Smith which consists of the most ancient unicellular eukaryotes with a nucleus and rod shaped chromosome but no mitochondria or plastid, thus believed to be the intermediate stage between prokaryotes and eukaryotes.
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Prokaryotes - primitive cell type that lacks a nuclear membrane and membrane-bound organelles
Protein - a complex molecule found in numerous cellular structures that is composed of amino acids ...
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