If so, the closest living relatives are the choanoflagellates, which are heterotrophic, single -
called eukaryotes having the same structure as some sponge cells.
These organisms are
called Eukaryotes and are either singular - or multiple - celled.
A green alga with throat - and stomach - like structures can swallow and digest bacteria when deprived of light, further bolstering Lynn Margulis's widely accepted idea that the origin of the plant - powering chloroplast was a fortuitous bout of indigestion.Termed «Endosymbiotic Theory», the idea is that early nucleated cells
called eukaryotes ate bacteria that managed to escape digestion but also couldn't escape their captors.
A new committee of cell parts had evolved,
called the eukaryote, with the genes kept in a bag in the middle of the cell, called the nucleus.
Not exact matches
The first option,
called the big - bang or mitochondria - early theory, predicts that a primitive archaeon engulfed a bacterium, an event that drove the development of
eukaryotes.
What Claverie
calls «the final click» came after comparative analysis of Mimi's DNA with that of other organisms in life's three domains: the
eukaryotes, bacteria, and archaea.
The second option, sometimes
called the slow - drip or mitochondria - late theory, posits that proto -
eukaryotes had already begun to develop complex features — particularly the ability to engulf prey — when the mitochondria came onboard.
On further examination, it turned out that the black specks are a type of organelle —
called an acidocalcisome — that is also found in certain single - celled
eukaryotes.
In
eukaryote organisms (almost all large organisms, such as animals, plants, and fungi, but not bacteria), DNA forms a complex with proteins that are
called histones.
In most
eukaryotes, these protein - carrying vesicles are released and further modified in stacks of flattened vesicles,
called Golgi bodies or dictyosomes.
All types of biodiversity (viruses, bacteria, archaea and
eukaryotes) were included within the
call.