Sentences with word «eukaryotes»

In eukaryotes such as animals and plants, DNA is stored inside the cell nucleus, while in prokaryotes such as bacteria and archaea, the DNA is in the cell's cytoplasm.

Autophagy is the «self - eating» process of consuming the portion of intracellular proteins in the cells of eukaryotes such as yeast, humans and plants.

Protists — a catch - all word, for the diverse array of single - celled eukaryotes found in virtually all moist environments — have received far less attention, despite being ubiquitous, ecologically important, and also medically significant.

«It's still 100 per cent archaeon, but the presence of genes we usually associate with eukaryote cell biology is absolutely fascinating.»

The other eukaryotes in light of evolutionary protistology.Biology & Philosophy.

James Lake managed to tease out information about the original separation of eukaryotes from prokaryotes using genomic data.

Genome - reconstruction for eukaryotes from complex natural microbial communities — Patrick T West, Genome Research

Our results imply that the genomes of haplodiploid and of diploid higher eukaryotes do not differ systematically in their recombination rates and associated parameters.

More oxygen together with mitochondria to burn it in was one driving function for the forthcoming Cambrian Explosion when the ancestors of modern eukaryotes» appeared.

These include: 1) finding and describing new fossils in Precambrian strata, 2) using analytical tools to examine those fossils in order to determine taxonomic affinity, taphonomy, functional morphology, and paleoecology, 3) using modern analogs to determine phylogenetic relationships and physiology of early eukaryotes and animals, and 4) combining multiple sources of data to create a timeline of biotic and abiotic events in the Precambrian.

In higher eukaryotes ATG8 evolved into a family of proteins known as the GABA type A receptor - associated protein (GABARAP), which includes the Microtubule Associated Protein 1 light chain 3 (MAP1LC3), better known...

«However, this issue of Cell publishes three papers suggesting that more complex cells called eukaryotes such as the human body cells, also present the sixth DNA base.

In most eukaryotes cytokinesis is brought about by a contractile actin ring located at the division plane.

Autophagy is the «self - eating» process of consuming unwanted elements in the cells of eukaryotes such as yeast, humans and plants.

Photosynthesis takes place in chloroplast, which arose from an endosymbiotic relationship between a unicellular eukaryote organism [1](common ancestor of plants and animals) and a bacterium over a billion years ago.

Services and resources will be focused on human cells and tissues, but consultation on setting up assays in other multicellular eukaryotes will be possible.

After comparing the sequence to those of a variety of other organisms, the researchers concluded that the Mimivirus lineage dates back some 3.3 billion years to the separation of early life into three major divisions: archaea, bacteria, and the more complex eukaryotes.

The best guesses for the time when eukaryotes evolved range from just below 2.0 billion years to around 3.5 billion years before the present.

Previously, InParanoid was based on eukaryotes only, but in the new release a number of prokaryotes are included thanks to the Quest for Orthologs Reference Proteomes.

These findings suggest that prions predate the evolutionary split between eukaryotes and bacteria about 2.3 billion years ago.

Biochemist Radhey Gupta of McMaster University in Canada proposes that a bacterium and an archaean fused to form the first eukaryote, based on his analysis of a pair of slow - changing genes found in what may be one of the oldest cells with a nucleus, Giardia lamblia.

«We've got a long way to go, studying how eukaryotes [multicelled creatures] can live in extreme environments, like acidic environments, which brings up big questions like life in space,» Sogin says, leaning back in his chair.

The ecology and diversity of microbial eukaryotes in geothermal springs — Angela M. Oliverio — The ISME Journal

Cyanobacteria are relatives of the bacteria, not eukaryotes, and it is only the chloroplast in eukaryotic algae to which the cyanobacteria are related.

The team identified 6,900 potential species [3] of eukaryotes [4] in the hundred or so samples of water and biofilms (consisting of communities of microorganisms) collected from every district of Paris.

A similarity in appearance and conformational behavior of yeast and murine complexes indicates a conservation of Mediator structure among eukaryotes.

Eukaryotes appear to be monophyletic, comprising one of the three domains of life; Bacteria and Archaea are prokaryotes that have none of the characteristics.

In 1998 he and colleague Mikls Mller of Rockefeller University proposed that eukaryotes emerged from a symbiotic relationship between methane - producing archaea and the bacterial ancestors to mitochondria based on their mutual metabolisms.

Therefore, it is likely that primitive eukaryotes lacking mitochondria and plastids were around a long time before they made it into the fossil record.

«It doesn't really matter which eukaryote you look at, whether it's amoebas or plants or humans or fish or insects or anything,» says coauthor John Reeve, a microbiologist at Ohio State University.

My colleagues generally agree that the fossil record provides only a most recent estimate for the time when eukaryotes were already abundant; they might have been around a long time before they made it into the fossil record in a recognizable form.

Chloroplasts are understood to have originated from prokaryotes that were engulfed by eukaryotes millions of years ago.

That celibate lifestyle is putting this modern eukaryote at risk of extinction.

Researchers had begun to wonder if these bizarre parasites and their relatives could be living relicts of an early, pivotal time in eukaryote history.

Did eukaryotes originate via a cellular fusion event?

Sequence analyses indicate that the gene family has a single origin and evolved independently and parallel to its GNA1 counterpart (present in all other eukaryote organisms).

She and her colleagues speculate that more eukaryotes missing mitochondria await discovery.

As supporting evidence, he cites the finding by others that methane - producing archaea and eukaryotes share similar histones, proteins that bind to DNA in the nucleus.

Among other things, they discuss the evolution of life from its chemical precursors, the divergence of the fundamental groups of organisms, including eukaryotes (cells with nuclei) and prokaryotes (without nuclei), and the evolution of the main eukaryotic forms: plants, animals and fungi.

Unlike bacteria, some archaea also contain histones, but researchers weren't sure whether these microbes spool DNA around the protein bobbins the way eukaryotes do.

«If that is true, then if we look at older fossil assemblages — say 1 to 1.6 billion years old — the fossilized eukaryote will show no evidence of predation,» Porter said.

This relationship enables photosynthetic eukaryotes (green plants and algae) to support ecosystems throughout the planet.

While alt - EJ has been studied in lower eukaryotes, little is known about its composition, regulation and mode of action in humans.

«In this scenario, a smaller virus infected different eukaryote hosts and picked up genes encoding translational machinery components from independent sources over long periods of time through piecemeal acquisition,» she said.

Some microbes merged with hydrogen - producing microbes (probably multi-functional ancestral mitochondria) to become eukaryotes that later developed into multi-cellular «animals» that survive and breed in anoxic conditions, without oxygen (phylum Loricifera, which includes Spinoloricus at left — more).

These 7 printable A3 / A4 mats cover the following content: Unit 1 - Cell Biology Cell structure Eukaryotes and prokaryotes Animal and plant cells Cell specialisation Cell differentiation Microscopy Cultuting microorganisms (biology only) Cell division Chromosomes Mitosis and the cell cycle Stem cells Transport in cells Diffusion Osmosis Active transport

To find clues, she has trained her sights on choanoflagellates — a group of single - celled eukaryotes thought to be the closest living relatives of animals.