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Eukaryote

Biology  Eugenics  Eukaryotes
04/17/2014

eukaryotes
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.


eukaryote
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 ...

Eukaryote
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Eukaryote
(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.

Eukaryotes
Basic structure
The basic eukaryotic cell contains the following:
plasma membrane
glycocalyx (components external to the plasma membrane)
cytoplasm (semifluid) ...

Eukaryotes
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 ' ...

(#) Eukaryote transcription factors bind to DNA to facilitate the binding of what enzyme?
(i) DNA polymerase
(ii) Helicase ...

A high percentage of the proteins encoded by the up- and downregulated genes are highly conserved in a variety of 'model' eukaryotes (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.

Eukaryotes
The Kingdoms Protista, Fungi, Plants and Animals are the other five kingdoms and they are composed solely of eukaryotic organisms.

eukaryote -- 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.

eukaryote
[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.
eumetazoa ...

Eukaryote. 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.

eukaryote /yoo-KARE-ee-yət, -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 eukaryotes.

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.

Eukaryote 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.

Eukaryote
Cell or organism with membrane-bound, structurally discrete nucleus and other well-developed subcellular compartments. Eukaryotes include all organisms except viruses, bacteria, and bluegreen algae.
See also: prokaryote, chromosome.

In eukaryotes
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.

Eukaryotes 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.

eukaryote, nucleus, nucleolus, endoplasmic reticulum, centriole, Golgi, cytoskeleton, mitochondria, vacuole, cell theory
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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.

eukaryote 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 eukaryotes, the rRNA in ribosomes is organized into four strands, and in prokaryotes, three strands. Eukaryote ribosomes are produced and assembled in the nucleolus.

1. In eukaryotes, what portion of the mRNA transcript is removed in the process of splicing?
A. exons
B. introns - CORRECT!
C. 5' cap
D. coding sequences ...

Sex in eukaryotes 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.

Eukaryotes - advanced cell type with a nuclear membrane surrounding genetic material and numerous membrane-bound organelles dispersed in a complex cellular structure ...

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 eukaryotes).

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 eukaryote i.e.

Recent evidence strongly suggests that lateral gene transfer involving eukaryotes may be more prevalent than once thought. In some DNA sequences, bacterial or archaeal sequences cluster in clades that are otherwise strictly eukaryotic.

DNA usually occurs as linear chromosomes in eukaryotes, and circular chromosomes in prokaryotes. A chromosome is an organized structure consisting of DNA and histones.

Prokaryotes are much smaller than eukaryotes. It's no surprise that Robert Hooke saw eukaryotic cells nearly a decade before Anton von Leeuwenhoek developed lenses strong enough to see a prokaryote.

When we divide the organisms that live on this planet, we make a distinction between those that have a nucleus, that are called eukaryotes, and those that don't have a nuclei, which we call prokaryotes.

The cellular organelle in eukaryotes that contains the genetic material.
Related Terms:
Eukaryote
Cell or organism with membrane-bound, structurally discrete nucleus and other well-developed subcellular compartments.

Double stranded RNA (dsRNA): In eukaryotes, it is an accidental byproduct of transcriptional process.

Histone
A basic protein from eukaryotes (or Archae) which binds to DNA, forming nucleosomes, and packaging the DNA into chromatin.
Histone-like proteins
Proteins from bacteria which bind to DNA, and compact the DNA.

A phylogenetic tree of all living things, based on rRNA gene data, showing the separation of the three domains bacteria, archaea, and eukaryotes as described initially by Carl Woese.

- A nuclear organelle of eukaryotes, associated with the chromosomal site of genes coding for rRNA
Nucleosome
- The basic structural unit of eukaryotic chromosome, composed of an octomer and DNA ...

As with eukaryotes, the membrane controls the permeability of the cell and is the major site of energy metabolism.

1. The membrane bound organelle containing the genome of eukaryotes organized into chromosomes.
2. The center portion of an atom which contains the protons and neutrons.
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 ...

Nucleus: The cellular organelle in eukaryotes that contains the genetic material. The center of a cell, where all of the DNA, packaged in chromosomes, is contained.
PCR: See Polymerase Chain Reaction.

The pre-tRNA of prokaryotes and eukaryotes has extra nucleotides at the 5' and 3' extremities and in some eukaryotic pre-tRNAs introns are also present.

Nucleus
The term introduced by Brown (1833) for the more or less spherical structure which occures in cells and stains deeply with basic dyes. The cellular organelle in eukaryotes that contains the genetic material.

See also: See also: Eukaryotes, Organ, Protein, Cells, Cell

Biology  Eugenics  Eukaryotes
04/17/2014

 
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