Class of organisms, composed of one or more cells containing a membrane-enclosed nucleus and organelles, that constitutes one of the three distinct evolutionary lineages of modern-day organisms; also called eukarya.
an organism having eukaryotic cells, i.e., those with a true nucleus
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
From Wikipedia, the free encyclopedia
Jump to: navigation, search ...
(Science: cell biology) organism whose cells have chromosomes with nucleosomal structure and separated from the cytoplasm by a two membrance nuclear envelope and compartmentalisation of a function in distinct cytoplasmic organelles.
EUKARYOTES - CELLS WITH PARTS
This is the place to learn about cells with a nucleus and all sorts of organelles. Eukaryotes are what you think of when you think of a classic "cell.
The basic eukaryotic cell contains the following:
glycocalyx (components external to the plasma membrane)
cytoplasm (semifluid) ...
Any living organism containing at least one cell which includes organelles (ie nucleus, chloroplast, mitochondrion). eg. Amoeba, human.
View : Dr Chromo's school on 'The cell ' ...
(#) transcription factors bind to DNA to facilitate the binding of what enzyme?
(i) DNA polymerase
(ii) Helicase ...
Gene Control in Eukaryotes
Much more complex - take humans for example
Every cell (except gametes) have the same DNA, with the same information
This is known as genetic totipotency ...
A high percentage of the proteins encoded by the up- and downregulated genes are highly conserved in a variety of 'model' s (Ashbya gossypii, Caenorhabditis elegans, Arabidopsis thaliana, Drosophila melanogaster and Homo sapiens) [51,52], ...
There are several methods used by eukaryotes.
Altering the rate of transcription of the gene. This is the most important and widely-used strategy and the one we shall examine here.
The Kingdoms Protista, Fungi, Plants and Animals are the other five kingdoms and they are composed solely of eukaryotic organisms.
Eukaryotes are organisms consisting of one or more eukaryotic cells (as opposed to proykaryotic cells); such cells contain membrane-bound nuclei, as well as organelles.
-- n. An organism whose cells have cytoskeletons for support and their DNA contained in a nucleus, separated from the other contents of the cell; e.g., protists, plants, animals, and fungi; eukaryotic- adj.
eukaryote A type of cell found in many organisms including single-celled protists and multicellular fungi, plants, and animals; characterized by a membrane-bounded nucleus and other membraneous organelles; an organism composed of such cells.
genes can be expressed in prokaryotic host cells.
A clone can sometimes be screened for a desired gene based on detection of its encoded protein.
Inducing a cloned eukaryotic gene to function in a prokaryotic host can be difficult.
[Gk. eu, good + karyon, nut, kernel]
An organism whose cells contain membraine-bound organelles and whose DNA is enclosed in a cell nucleus and is associated with proteins.
. An organism whose cells possess a nucleus and other membrane-bound vesicles, including all members of the protist, fungi, plant and animal kingdoms; and excluding viruses, bacteria, and blue-green algae. See Prokaryote.
eukaryotes cells that contain a nucleus and internal cellular bodies called organelles.
evolution changes that occur within populations and organisms that make individuals able to adapt to their external environment.
/yoo-KARE-ee-yÉ™t, -ee-ote/ Organisms, both unicellular and multicellular, in which there is a membrane-bounded cell nucleus and other well-developed organelles. All organisms other than viruses and prokaryotes are s.
eukaryotes: Organisms whose cells have their genetic material packed in a membrane- surrounded, structurally discrete nucleus and with well- developed cell organelles. Eukaryotes include all organisms except archaebacteria and eubacteria (cg.
organisms whose cells have a true nucleus
(eu = good‚ well‚ true; karyon = nut‚ kernel‚ nucleus)
Euryhaline having a wide range of salt concentration tolerance ...
Eukaryotes - Organisms whose cell interiors are characterized by separation into organelles and whose genetic material is enclosed by a nuclear membrane. Compare with prokaryotes.
Cell or organism with membrane-bound, structurally discrete nucleus and other well-developed subcellular compartments. s include all organisms except viruses, bacteria, and bluegreen algae.
See also: prokaryote, chromosome.
Self-replicating stretches of eukaryotic genomes known as retrotransposons utilize reverse transcriptase to move from one position in the genome to another via a RNA intermediate.
s have only 10% of their DNA coding for proteins. Humans may have a little as 1% coding for proteins.
Eukaryote chromosomes are made of DNA and proteins.
4.1.2 Define gene, allele and genome.
Gene: a heritable factor that controls a specific characteristic.
, nucleus, nucleolus, endoplasmic reticulum, centriole, Golgi, cytoskeleton, mitochondria, vacuole, cell theory
Search the Web
Custom Search ...
Eukaryotes have 9 doublets (pairs) of microtubules arranged in a circle around 2 central microtubules. This 9 + 2 pattern is characteristic of all eukaryotic cilia and flagella but not those of prokaryotes.
Having a true nucleus; a cell that has membranous organelles, most notably the nucleus.
eukaryotic cell A cell containing a membrane-bounded nucleus and membrane-bounded organelles.Compare prokaryotic cell.
In eukaryotes, a gene often contains altering sequences known as exons (expressed codons) and introns (interrupting codons).
In s, the rRNA in ribosomes is organized into four strands, and in prokaryotes, three strands. ribosomes are produced and assembled in the nucleolus.
1. In eukaryotes, what portion of the mRNA transcript is removed in the process of splicing?
B. introns - CORRECT!
C. 5' cap
D. coding sequences ...
Sex in s involves two processes, meiosis and syngamy.
Sexual organisms exist in haploid and diploid states. In the haploid state, they have a single (1N) set of chromosomes and so a single allele of each gene.
Cap: All eukaryotes have at the 5' end of their messages a structure called a "cap", consisting of a 7-methylguanosine in 5'-5' triphosphate linkage with the first nucleotide of the mRNA.
intron In s, bases of a gene transcribed but later excised from the mRNA prior to exporting from the nucleus and subsequent translation of the message into a polypeptide. PICTURE ...
Chromosomes exist in pairs in higher eukaryotes. (See Chromosome walking.) Chromosome walking. Working from a flanking DNA marker, overlapping clones are successively identified that span a chromosomal region of interest. (See Chromosome.) Cistron.
Artificial chromosomeA vector constructed from host cell chromosomal elements such as origin of replication, telomeres and centromere (in s).
These are: the prokaryotes ("ordinary" bacteria), archaebacteria (thermophilic, methanogenic and halophilic bacteria) and eukaryotes.
But first I want help and make sure that you understand what's going on, now if we take a look at any living organism that's a i.e.
See also: Eukaryotes, Organ, Cell, Cells, Trans