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Yes, the Last Universal Common Ancestor (LUCA) likely required ATP (adenosine triphosphate) as a source of energy for cellular processes. ATP is a central molecule in energy transfer within cells and is fundamental to various metabolic pathways. While the exact metabolic pathways of LUCA are still under study, it is generally accepted that the use of ATP for energy would have been advantageous for early life forms.

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What was LUCA in biology?

LUCA stands for Last Universal Common Ancestor. It is a hypothetical organism that is considered to be the most recent common ancestor of all life on Earth. LUCA is believed to have existed billions of years ago and is the origin of the tree of life.


What was LU-CA?

LUCA stands for Last Universal Common Ancestor, the last organism that is the common ancestor of all life on Earth.


What is our evidence of Luca, the common ancestor that we can link all living organisms to?

Scientists have identified Luca as the Last Universal Common Ancestor, or the common ancestor of all living organisms. Evidence for Luca comes from the study of genetic material and the similarities found in the genetic code of different species.


Almost all living organisms use DNA ATP and the same DNA triplet code this is an example of evolution based on what?

Common ancestry. In this case the last universal common ancestor, LUCA.


Is there no evidence of a common ancestor?

There is ample evidence of a common ancestor for all life on Earth, known as the Last Universal Common Ancestor (LUCA). This is supported by various lines of evidence, including genetic similarities, shared biochemical pathways, and the universal presence of certain biomolecules across diverse species.


Which terms is associated with the single-celled ancestor theory?

The term associated with the single-celled ancestor theory is "Last Universal Common Ancestor" (LUCA). This theory postulates that all living organisms on Earth trace back to a single-celled organism from which all life evolved.


What is the name of the first living thing on earth?

There is no particular name for it, since we do not know exactly what that organism was. We do, however, have a general name LUCA, which stands for Last Universal Common Ancestor, meaning the last living thing that was the ancestor of all life on Earth.


What is the mating of two closely related individuals?

Organisms sharing a common ancestor are of common descent. The LUA , the last universal ancestor, lived 3.9 billion years ago.


How is it possible that 20 million living organisms on the planet are made up of only 5 types of nucleotide bases arranged in long chains?

Because all these organisms had a universal common ancestor that used these nucleotides and gave rise to all life on earth.


What common ancestor does all life share?

The last universal common ancestor (or LUCA) for all known life would have been some single celled organism similar to prokaryotes. It might have been an RNA or DNA based organism, but it would have used more or less the same genetic code as all modern organisms (with a few minor variations) today. It will probably have lacked a true cellular nucleus, and many of the organelles that modern organisms have, but it would still have used ATP as a key factor in its metabolism. Note that, like with all Most Recent Common Ancestors for any group, it is not necessary that a single species of organism is the sole ancestor for all modern life. It may well be possible that different species contributed to modern life (see also: multiple origins hypotheses). There will be one single ancestor common to any specific set of traits in all the diverging lineages, but, depending on the set of traits examined, they may lead to different origins. Compare, for instance, to mt-DNA Eve and Y-chromosome Adam: there is one most recent common ancestor for all surviving variations of mitochondrial DNA via matrilineal descent, but there is a different ancestor, living in a different era, for all variant Y-chromosomes surviving through patrilinial descent. It is, however, likely that there was, at some time, indeed one single species or closely linked collection of species of organisms from which all modern life descends. Also note that LUCA concerns only the most recent of such ancestral organisms: it itself would have had ancestors, and shared ancestors with other lineages existing at the time.


What does the main trunk at the bottom of a phylogenetic tree represent?

The main trunk at the bottom of a phylogenetic tree represents the common ancestor from which all the species or groups included in the tree descended. It is the starting point from which the branches representing different species or groups diverge.


Name the last level at which dogs and humans shared a common ancestor?

The last common ancestor of dogs and humans lived approximately 95 million years ago, during the Cretaceous Period. This ancestor was a small mammal that was neither a dog nor a human, but was a distant relative of both species.